The folks I recognized on my way out were people with large profile pictures of their faces. In general, this wasn't the case. I'd have had to do a lot more rifling through accounts to be able to identify someone face-to-face, and would have risked someone having a bad reaction.
So, unlike all the people who have used Firesheep in public to look at peoples' accounts and then not told anyone about it, I notified the users and then told the public about what happened. You're saying that's bad?