Google sandbox certainly captured the attention of many, judging from the stories we’ve heard. Accordingly, sandbox allows newly launched sites to rest in there for a couple of months since these sites are not capable of getting inbound links. Nevertheless, It is the search engines job to decide whether or not the site should go in sandbox, considering the backlinks authority and durability. Therefore, the moment search engine feels that the site’s performance is poor or has practiced techniques that are unethical, it pushes them down to sandbox. Well, I’ve heard Yahoo and MSN are also producing a sandbox system of their own.