In an attempt to make sure that the Google user is getting search results that are as favorable as possible, it "Sandboxes" any site that seems to be trying to "cheat the system". A "Sandboxed" site will be kept out of the searched results until Google re-visits it and determines that no funny business is going on. If you build a site be sure to build links slowly and not all in the same way and you should not have to worry about the Google Sandbox.
This topic was started on Sep 24, 2013 and has been closed due to inactivity. If you want to discuss this topic further, please create a new forum topic.