I gave it a try feeding it with one of my community nicknames. It was rather generic so I did expect some false positives. Color me surprised when it automatica

I gave it a try feeding it with one of my community nicknames. It was rather generic so I did expect some false positives. Color me surprised when it automatically started a second search iteration using my real name! Turns out that one of the websites I'm registered to uses Gravatar to display profile pictures. I've naively been using the same WP account to set a picture for all my emails, believing that you couldn't get information about my other accounts using a simple picture. I guess I was wrong, and I'll probably split my Gravatar account this evening.