Sandbox Effect

In reality, this is a child play. In term of Internet Search Engine, this is the term used to explain that websites with newly-registered domains or domains with frequent ownership or nameserver changes are placed in a sandbox (holding area) in the indexes of Google until such time is deemed appropriate before a ranking can commence. Webmasters have noticed that their site will only show for keywords that are not competitive. It appears this effect does not affect new pages unless the domain is in the sandbox.
The Sandbox Effect is a topic of hot debate among those interested in search engines and search engine optimization. There are many different opinions about it, including the view that the Sandbox Effect doesn't actually exist and that the search ranking behavior can be explained as a result of a mathematical algorithm, rather than a decided policy.
Although certain details of the Sandbox Effect are disputed by webmasters, there is general agreement that the Sandbox only applies to search results from Google, and that results from other search engines such as Yahoo or MSN are not affected.

How to Avoid Sandbox

* The best way to avoid sandbox effect is by using less competitive keywords. Websites that get into sandbox are sites which target highly competitive keywords. If you target less competitive keywords or long phrases then your chances of getting sandboxed is very less.

* Though not really recommended but don’t used newly registered website. Only new website get inside sandbox, used or expired domain never does.

* Used sub-domains and deep linking. Even though your website were dump and buried in the sandbox, your pages rank well. Try to get link from edu or gov. If you do this, you will earn trust from Google and avoid being sandbox.

How to Get Out From Sandbox

* Time is the only real escape from the Sandbox. Depending on the competitiveness of your most important keywords, that time can vary from one to six months, with three to four months being the average duration. In the meantime, continue to improve your site contents, and be prepared to make a rapid rise once the Sandbox probation ends.
* Adding fresh keyword rich content and new incoming links to your site. Adding inbound links will ensure that they lessen any possible new link dampening filter that might be in effect. The links would be well aged and ready to pass along their full value of PageRank and link popularity, as the site comes out of the Google Sandbox.

* Be sure to add as many incoming links as possible to get past the alleged new links dampening filter. Keep adding keyword rich content to your site. Anything that can be done to speed up your site’s appearance on the internet, including the purchase of an already existing domain, should be considered.


References :

http://en.wikipedia.org/wiki/Sandbox_Effect
http://www.google-success.com/what-is-google-sandbox-effect.htm
http://forums.digitalpoint.com/forumdisplay.php?f=67
http://www.allgoodarticles.com/article4206.html