Well there was this guy from my hometown who shared his facebook password to strangers on parties. You never knew what would appear on his facebook account after weekends.

You could argue that's smart as long as you don't use Facebook to log in to anything else. He can say whatever he wants and now one can be sure it's him.

It's certainly no jumping off a bridge.

Rebellion is more fun when there's a spark of risk, anyway. Doesn't mean there's much risk.

I could share my twitter password with a major brand. The worst case scenario is pretty minor.

I wouldn't do it, but this was the funniest instance of someone sharing his passwords I've ever listened to:

http://youtu.be/Tan8_aDWX78

Who is seriously worried about their Vine account getting owned?

Probably those who use the same password everywhere.

There's nothing wrong with it if they are unique and if your accounts are well compartmentalized I guess...

i'd encourage users to consider security, that private on the internet has a new meaning, it's more ephemeral than the word's previous usage