How would your social security number end up on the internet? You'd really have to f**k up, over here anyways.
I don't see my address ending up there either, unless the sites I actually give my adress to get hacked or turn 'bad'. Besides, it can be found out other ways. Besides, I tend to just use a non-existant one for sites it shouldn't be a requirement for, and they still want to find out.
As for my name, big deal. I could guess your name and start harassing you.
On the credit card front, that's a valid point to me, and something you should be careful of. Of course, if it were me I wouldn't put it up on the internet for everyone to see, but keep it as my own information. You'd be screwed either way though..




