hello, I know what is sandbox but don't know how to check a site is in sandbox or not? If anyone know this then please share.
There are many tool available for checking for sanbox. Another idea for know sanbox you site ranking very down in google and high in yahoo and bing search engine so you know your site in sanbox..
Type the URL directly in google and search, If you get the site at first ranking then its good,if you dont find the site ranking even for it's URL the you are definitely penalized.
@sunny , i like your method to know about penalized sites. This is the best method to know about site status. Are you please reply what to do if our site is penalized by search engines?
You can find more information on your question on Google. The space is too small to give a full comprehensive answer to your question. To avoid the sandbox just make sure that everything you do is kept legit and is strictly white hat practice.
when ever you doing a violation of search engine rules google give you punishment and your site drop down into sand box so beware if you want to save
http://www.bigoakinc.com/seo-articles/googles-sandbox-effect.php Not ranking well with keywords, despite having done good external SEO.