The internet is a big place. By and large, nobody cares who you are. Those that do, already know you, so the information is redundant.
If, however, you are a child or teenager (I know the original poster isn't, but I'm using the generic "you"), I strongly recommend putting up as little information as possible. As a webmaster for a children's summer camp, I've had my share of being creeped out by some of the weirdos on the internet. Once upon a time my camp's website posted nice big pictures of our kids at play. Then one day I was checking our server logs and discovered a good chunk of traffic was coming from a website which linked to hundreds of sites where you could find pictures of young boys (Scouts, wrestling teams, family photos, camps like mine). Needless to say I wasn't too happy! Since then I've scaled down the resolution of the pictures we post on our website, I never identify kids by name, and generally take far more precautions.
I've seen some of the MySpace and Piczo sites that some of our campers put up and I am shocked by how open they are about their names, ages, names and ages of younger brothers and sisters, and posting webcam pictures of themselves. Sooner or later someone is bound to be in for a rude shock.
On the other hand, when I established my personal website with blog and photo gallery, I knew it was only going to be for my family and friends, and anyone else wishing to look up information about me already has plenty of avenues to do so (Google can be creepy sometimes), so I didn't worry too much. My address and phone number aren't posted online, but you can find my full name and email address as well as school and research details. Half the reason I put up the site, after all, was to establish some academic credibility (having written a few papers).
