Does Google do a “holiday change”?

What change occurred around October 22nd? A lot of websites complained about losing rankings overnight. Is this a holiday change? will, brooklyn, NY Have a question? Ask it in our Webmaster Help Forum: www.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