Should a personal life be online?

I’m quite a private person, and have previously posted, here, about the security aspects of putting your life online.  I’m brought back to a similar subject by Chris Pirillo’s post informing that he and his wife are divorcing.

I’ve read Chris’ blog for quite some time, and joined his Geeks site some time ago, and have seen that he lives his life very publicly online, including having a live stream from his house pretty much 24/7. 

I could never, and would never want to live my life in such a public manner, in fact I do my best to remain pretty well hidden.  I’ve recently noticed a tendency for people who we know very vaguely asking to become friends on Facebook etc, and intially I didn’t see the harm, but when posting photos of personal events, I realised that I didn’t want to show my photos to these people I don’t really know.  As such, I’m tending to be far more careful about who I add.

Unfortunately, we can’t really control what others do – if I go to a party and somebody takes a silly picture of me and posts it on Facebook, whilst I can remove the tag which identifies me, that wouldn’t stop many people finding it, if they know who my friends are.  As membership of such social networking sites has become normal for much of the population, what controls should be in place for this?  And who will make sure these controls are maintained?

As we move in a more and more online world, how do we keep our personal life personal?