Earlier today, I briefly noted that Google is dropping pages and then bringing those pages back into the Google index. The question is what is going on. Honestly, I have no idea. But at least, let me give you a ton of forum threads that may have some clues as to this weird Google behavior.
WebmasterWorld Forum Threads:
- Very Odd - Big Drops in SERPS Today April 26, 06
- Major Change in Supplemental Result Handling
- Somethings Up Right Now! -- 30 domains just went "home page only"
- Pages Dropping Out of Big Daddy Index
There are also other threads, but those are the most active and recent on the topic at WebmasterWorld.