what is sandbox
 

what is sandbox. how its work..??

Google Sandbox is generally used for websites which are newly launched and then arouse the suspicion of Google, usually by adding a large amount of new content in a very short period of time. This appears to Google as spam; and the Sandbox is essentially a spam filter which watches for suspicious activity, reasoning that a site which adds enormous numbers of new posts, pages and content instantly is probably filling itself with duplicate content or engaging in search engine spamming.