The whole deal with personal information troubles is that certain people may be able to cause damage to, or (more likely) interfere with the real lives of those who had their dox leaked.

Things that are harmful (time to state the obvious!)

Real name. On its own, all it really does is destroy anonymity, causes general discomfort for the victim…once combined with something else it can be much more dangerous. Some of these things include…

pix Now they know what you look like.

address Now they know where you live.

phone number Now they can prank call you! or order like 100 pizzas.

Family members Oh ****. They’ve got your wife and kids now, and possibly your dog or cat or bunny rabbit.

Occupationreally varies on the job, but something that shouldn’t go revealed either way.

I think that covers all the bases of the big no-nos in personal info.

Revealing a birthday, if it is just the birthday, is pretty much harmless.

The worst they can really do is make a birthday thread with goatse inside or something. Unless of course they already have other info and can use birthdays for verification…but at that point you’re pretty much ****ed in every orifice anyway. So what is the harm in just revealing a birthday?