Theoretically the answer is “no.” Moving from one host to another does not affect SEO. However, if you are not careful enough and you fail to follow instructions your sites could face risks of defeating your SEO. The impact largely depends on the actual transition process from your old host to a new one but utmost it depends on you.

Downtime is commonly the major issue you may face when you change to a new web host.

Downtimes, for sure, are not healthy for your search engine-optimized websites, especially when it is prolonged. During downtimes, search engine spiders fail to crawl your site’s web pages and thus affect your pages’ SERP ranking when the search engine begins to re-index all downloaded pages by spiders to provide fast searches. Downtime is commonly the major issue you may face when you change your host. The good thing is that the chance of experiencing a downtime can be prevented. A good host would always suggest the following steps to provide your sites a smooth and transparent transition from your old to new host:

1. If you are moving a domain name to your new host as well, unlock your domain name from your old host/ registrar and provide your new host the EPP/authorization code. This will let them initiate domain name transfer request to your old host/registrar. If you are only moving a site or sites between hosts and does not involve domain name registrars, proceed to Step 2.
2. Set up your website on your new web host. Begin by adding your domain name in your new host’s control panel. Copy all your files to appropriate domain folder and copy necessary databases from your old host to your new host to “mirror” your existing website. You can test/view the files you upload to your new host by typing into your browser your domain name alias. If you don’t know about this, ask your new host’s live chat support.
3. Change your domain’s name server configuration (DNS) and point it to your new web host. After completing this step, your site should still be accessible online and still running from your old web host while the new DNS settings are propagating on the Internet.

The common pitfall in the process is when you take down the site on the old web host while the DNS is still propagating – definitely it would cause downtime for your site. It’s when the SEO risks come in. To prevent that to happen, keep your website files on your old web host for one week. This ample time lets the DNS propagation to complete which can be identified by monitoring where your website files are pointing to. If your domain is finally pointing to the files on your new web host, then the site transfer is done and complete. You can now take down the site from your old web host and enjoy the services of your new web host preserving your site’s PR rank and SERP position.

SEO is significant to site owners (regardless of the nature of the site) because it promotes greater chance of getting a higher position in SERP. Higher rank usually means greater probabilities of being searched by people, bringing traffic to their website and creating opportunities. If you just created a blog website powered by WordPress or you have an existing site that is not optimized, here are the most common effective methods you can do to improve your SERP rank.

Provide quality content at higher frequency

This is easier said than done. Providing fresh, quality content at higher frequency remains the most effective method of SEO. Quality content refers to the significance of information or services presented on your website. For instance, if you’ve published an article (or any content) that interests your users, chances are great that they might visit it again, promote it or create link to your website.

Search engines nowadays are getting smarter and more sophisticated that it can nearly bring visitors exactly to the page they really want. Search engines will look less on the syntactic composition of a web page, and focus more on the real, actual content. Since this is the trend, it’s wise to strive to provide quality content. The content, for me, remains the “king” when it comes to website marketing.

Make your pages searchable

Validate your pages and make sure they adhere to W3C coding standards. Having a good code in your pages basically will help spiders crawl and search relevant information on the page. Spiders are automated programs or scripts that search engine use to browse and discover the pages of Web. While validating your code does NOT improve your SERP ranking, it does contribute to an effective SEO by its nature. Use absolute links, and try to avoid making a Flash-dominated page because, as of this writing, it performs poorly in improving SEO. Dead links and HTML/JavaScript/CSS syntax errors should also be eradicated so that the page will properly be indexed.

Join the social community bandwagon

If you ever heard of social community and bookmarking sites (e.g. Facebook, StumbleUpon, Technorati, Digg, Del.icio.us, among others), they are hot these days because they promote socialization beyond borders. Fortunately, webmasters can take advantage of them because they can be great tools to improve the exposure of a website. Most sites work by submitting to them your content through Web feed formats (like RSS), online bookmarking and personal submission, which they publicize. Squidoo, for instance, lets you create blurbs to promote or sell just anything. If interested online readers found them, they can potentially bring huge traffic to your blog or website. To participate, visit social community websites and create an account to them.

Install SEO-friendly WordPress themes and plugins

Personally, the Themes and Plugin feature are among the myriad things I love in WordPress blog platform. They are easy to install and you don’t need to be a geek to be able to add widgets and extended functionality (well, it helps when you know HTML, CSS and PHP – but don’t be scared if you don’t). If you own a WordPress-powered blog, visit their official website and browse for SEO-friendly plugins and themes. You may personalize them if you want.
This website, powered by WordPress, uses the following plugins:

• Adsense Deluxe
  Place Google AdSense ads in your WordPress Posts. Requires WordPress 1.5 or higher. For complete usage and configuration click on AdsenseDeluxe under the “Options” menu.
• All in One SEO Pack
  Out-of-the-box SEO for your WordPress blog.
• Digg This
  Adds Digg story link on detection on digg referrer.
• DoFollow
  Selectively disable the “nofollow” tagging for comments.
• FeedBurner FeedSmith
  Originally authored by Steve Smith, this plugin detects all ways to access your original WordPress feeds and redirects them to your FeedBurner feed so you can track every possible subscriber.
• Google Search Widget
  Adds a sidebar widget to let users search your site with Google.
• Google XML Sitemaps
  This plugin will generate a sitemaps.org compatible sitemap of your WordPress blog which is supported by Ask.com, Google, MSN Search and Yahoo.
• Social Bookmarks
  Adds a list of xHTML compliant graphic links at the end of your posts that allow your visitors to easily submit them to a number of social bookmarking sites.
• Text Link Ads
  Really Simple Web/RSS Advertising For Personal or Commercial Use
• WordPress Database Backup
  On-demand backup of your WordPress database.
• WP-Cache
  Very fast cache module. It’s composed of several modules, this plugin can configure and manage the whole system.
• WP-Print
  Displays a printable version of your WordPress blog’s post/page.
• WP 2.3 Related Posts
  Generate a related posts list via tags of WordPress 2.3
• WP YouTube
  WP YouTube makes it easier for you to post embed YouTube videos in WordPress. It also features YouTube options , for you to control all the YouTube videos at the same time.

I’d like to give credit to the creators of the above-mentioned plugins. It is up to you to discover how they work and what benefits they bring. Also, please note that there are other plugins that you may want to install for your WordPress site. My personal advice, however, is not to install too many plugins because they may consume too much CPU resource if you are on a basic hosting.

Spread your links to the world

In SEO, it is generally better if you strive to have more inbound links. Inbound links are links pointing to your website from other sites. If you are blog is new, it is wise to submit your website’s Uniform Resource Locator (URL) to free web directories. This can initially build inbound links that can be beneficial. Your next option is to exchange links with other bloggers or sites. Making friends online, blog commenting and link baiting usually help. If more of your inbound links come from sites with high PageRank and belongs to your blog’s niche, you might increase your blog’s PR as bonus. There are still quite a number of methods to spread your links to the Web, I leave it to you to discover. Enjoy!

Last year and until now, Google actively wipes out the PageRank (PR) of many blogs and websites they believed to have involved to link farms and other schemes designed to “artificially” inflate PageRank. PageRank is Google’s view on how important a web page is, thus favoring more important pages in their top Search Engine Results Page (SERP). Many observations reveal in totality that most penalized sites are those who joined networks offering paid reviews or links. For bloggers, PageRank is significant because many ad network companies (major source of blog revenues), begin to follow Google’s standards. Higher PRs somehow contribute to the continuous existence of most blog sites in the Internet.

This year, most bloggers started with a different perspective. They begin to take advantage and favor services believed to be “top Google alternatives” which, in their view, are less obtrusive to their ideals, more flexible, and more lucrative. It indicates a healthy competition and preludes another possibly more intense search engine and online advertising war this year.

My Personal Standpoint

In my personal standpoint, though I know I am quite a fan of Google services, I share sentiment with other bloggers that Google’s dominance could be an imminent but indirect threat; they impose policies and indirect guidelines associated with the usage of their services, or in relation thereof, that rather inhibit bloggers to be able to benefit from the Web as much as before. Google is giving free services to the masses but isn’t it their strategy to bait our hearts toward their products? This is debatable and I know there are many positive and negative points of view for this. However, for many bloggers, they view that the moves of Google imply that it tries to become the “Microsoft of the Web.” Well, in fact, I suspect one day Google and Microsoft will come to a head-to-head bout in creating their own standards with all people under them. Fortunately, we got alternatives to Google and they are fighting for themselves and for us.

I believe that Google will continue to be in the top ranks in 2008. There are many factors supporting this assumption. One of these, for instance, is Google’s reaction (and to least extent, Yahoo and Microsoft) with the depreciation of the US dollar. Google has safety nets that would ease hurt from the dollar crunch as other US-based companies are feeling. In the second quarter of 2007, Google’s financial report reflected that 48% percent of their income comes outside of the United States. Another point is Google’s acquisition of companies in 2007. If they are able to prove in 2008 that they did a wise move, these innovating companies under their control will push their business further.

In conclusion, like what bloggers predicted, Google might reach its plateau in 2008. Unless they make a good turnaround, its downfall will begin at least to most bloggers’ hearts. This should never be underestimated: bloggers are very influential people and they can badly damage a company’s reputation if they move together towards a similar direction.