Passwords and privacy

There's a small fire over at Bend There, Done That that sprung out of an IM conversation I had with Anna about sharing your passwords (to email, Facebook, etc.) with significant others.

My take is that it's not a big deal and certainly not a problem. If it happens, it happens.

According to the girls (Anna, Heidi and Jeanna), that's ass backwards. Like, sharing passwords caused the divide between Israel and Hamas.

What's your take?