The latest version of Google’s anti-spam algorithm, dubbed Penguin 2.0, was announced yesterday. The update includes changes to the underlying algorithms used to evaluate whether a website is spammy or not. About 2.3% of queries in U.S. English will be visibly affected by the changes. Google’s webspam czar Mike Cutts also posted a link to a report page where anyone can flag sites they consider spam for the attentions of Google engineers. The form doesn’t ask for any identification by the reporting party, requiring only a copy/pasted URL.”]