As we do every month, we summarize an ongoing WebmasterWorld thread specifically designed to track Google changes. We also provide links to the most interesting Google SEO related topics we covered in the past month. You can find last month’s report over here.

Here are some of the points from the WebmasterWorld thread:

Significant ranking changesGoogle’s holiday shopping algorithmRanking changes from day to day

Tedster mentioned the “holiday shopping” algorithm, implying Google knows people are now in buy mode for the holiday season and maybe Google’s algorithm is a bit more product/shopping sensitive these days?

Anyway, here is a break down of the topics we covered in the past month.

Google Algo/Ranking Related:

Google Update or Bug: More Complaints Over Google’s Search ResultsGoogle Ranking Update or May Day Impacting More Sites?Google PageRank Updating This Morning? October 2010Google Fixes Blogspot Indexing Issue: New Content Being IndexedMore Google May Day Theories, Five Months LaterGoogle: Different Algorithms Can Apply To Different Sites At Different Times

Google User Interface Related:

Google Pleases Local Optimizers & Upsets AdWords Optimizers With Place SearchGoogle Showing Related Brands, Stores & Types In ResultsGoogle’s Realtime Counter & Shared By In Web Search ResultsGoogle Magnifying Glass Page Previews, A Real Google Test

Google Webmaster Tools Related:

Google Improves Parameter Handling For Faceted Navigation ControlGoogle Adds Rich Snippets Support For E-Commerce SitesGoogle Webmaster Tools Says “You Have More Sites” To AddGoogle Updates Link Reports Before BingGoogle Webmaster Tools Adds Change Percentages To Query Report

Forum discussion at WebmasterWorld.