I don't know when I first noticed this but on gmail, the favicon displayed is different for my account but not anyone else's that I've talked to. It's a round flower with a yellow symbol in the middle that looks like the end of a crescent wrench.
Here's a link to it:
http://imgur.com/MlcXQRX
When I search for it on Google Image search, I can only find 8 results for it, all on Chinese sites.
http://preview.tinyurl.com/oj99epk (with preview link so people can see the full google search url before navigating to that link)
Has anyone else seen this or at least know what the symbol is? I don't recognize it at all.