I'm surprised Gravatar claims the hash is about privacy in the first place. I thought it was about generating a short, standardized URL. If sites wanted to pro

I'm surprised Gravatar claims the hash is about privacy in the first place. I thought it was about generating a short, standardized URL. If sites wanted to protect their user's anonymity, they'd cache the gravatars with different file names on their servers. Also, as a user I would never sign up for a site with my "real" address when I'm not comfortable with it being known eventually, Gravatar or not.