pageoneresults - 1:38 pm on Oct 23, 2009 (gmt 0)

I'd tend to lean more towards what Receptional Andy describes above. According to protocol, the hash symbol and everything after it are supposed to be dereferenced by user-agents. Apparently Google have changed that. I guess they thought the protocol was limited and decided to start referencing those # points of entry. Hey, when you run the Internet, you can do what you want. ;)