[If you want to ...] Get a site added back to Google [Then ...] 
If your site was distributing malware, and is now clean, request a malware review. If your site was showing spam, but is now clean, submit a reconsideration request. If your site was in violation of the Webmaster Guidelines, but is now clean, submit a reconsideration request. If you asked for a page or site to be removed from Google, but you've changed your mind, request reinclusion of the content. If you received a phishing warning but believe that it's actually a legitimate page, report an incorrect phishing warning.