What happens if I link to a good page that later becomes spammy?

Site A links to Site B because Site B has content that would be useful to Site A’s end users, and Google indexes the appropriate page. After the page is indexed, Site B’s content changes and becomes spammy. Does Site A incur a penalty in this case? MrTVTL, Toronto Have a question? Ask it in our Webmaster Help Forum: productforums.google.com Want your question to be answered on a video like this? Follow us on Twitter and look for an announcement when we take new questions: twitter.com More videos: www.youtube.com Webmaster Central Blog: googlewebmastercentral.blogspot.com Webmaster Central: www.google.com