This should be the attitude for putting anything online. If it's posted online I find it best to just assume that it is, or will become public at some point and base if it should be posted on that.

For instance, I've never put a photo of myself online, yet Facebook has me tagged well over 300 times from going out to bars with friends. I'm ok with my friends seeing these since they actually know me, but I can't control the privacy settings on their albums -- only whether or not people can get to those photos from my page.

I don't walk around with the uneasy feeling that, at any time, I could be photographed and unknowingly put online... but I still think about it from time to time.

I see my "lucky 35" in real life quite often, and can tell them personal things in person, where it becomes a conversation. I'm not sure why I would ever need to share personal things online.

After all, the reason people become "online friends" to begin with is that you don't see that person enough in real life to maintain a friendship. If you really need to tell one of these pseudo-friends (or far-away family) something personal, there are many avenues for that, including email and the phone.

I know too many people in Portland to keep in touch with them all in person, via phone, or email, but Facebook is a great way to see the great stuff people are doing with their lives and share mine.

Your definition of friend may be weekly face time, but for many that live in an urban setting, it's simply impossible. Doesn't make them any less of a friend, though.

Of course malice isn't an issue, since they're real friends. But friends aren't always security-conscious with their computers. Someone might borrow his friend's computer and find that it's still logged into Facebook, or that the browser stores the credentials. Someone can sneak a peek while his friend looks at personal information in a cafe. The more real friends are added, the more likely this becomes.