Theoretically, someone could sit in a MLL somewhere, and open FireFox, and run Firesheep, and from there:

-- log into the Facebook accounts of multiple people who are in the MLL RIGHT NOW

-- access the WSJ account of someone who is logged into the MLL right now

... and access other accounts which are accessed in the clear through non-encrypted connections.

Entirely theoretical. But suppose someone was reading your account right now?

If you haven't heard of Firesheep in the last week, and you are using any http:// connection for things through unprotected Wi-Fi, do you really think you are secure?

It could be something to think about. Entirely theoretical, of course.