Expiring Domain Names

The Expired Domain Penalty : Using a previously expired domain to launch a new web site used to evade this dreaded “sandbox effect.” This was likely because Google was unaware that the site was new. Google put a stop to this loophole a while ago, and now it seems to be quite the opposite situation at times.

An expired domain name may now be subject to a temporary penalty. This is important, because it implies an additional delay before a site begins to rank well. In some cases Google will even refuse to index the pages at all during that period, leaving a web site vulnerable to content theft. It is also likely that Google devalues any links that are acquired before the re-registration of the domain. At the time of writing, other search engines do not appear to penalize previously expired domains.

Related SEO Tips

Available Domain Names
some tactics that few people use to appealing available domain names for businesses.

Cheap Domain Names
Many online services can help you select a good and cheap domain name for your site

Change Domain Names
Sometimes you have to change your domain name, but be careful,because it will be uplicate content penalty