Black Holes

have black holes actually been proven to exist? when i was a kid i was all into astronomy and recently i've been looking into it again, and after reading several articles on the subject im still kinda in the dark. if you say wiki black holes there's tons of inferential information about them existing but no references to actual known black holes. also I just read some random post on /b/ (lol, reliable information) saying "as science has proven a blackhole is impossible (NASA news 2006) " <- anyone know wtf article he's referring to.

so tl;dr, blackholes: definately out there or an interesting theory?

Yes they exist, but no we haven't proven it yet.  We've observed a number of places in the universe that look like what a place with a black hole in it ought to look like, seen from jillions of gajiggers away.  Some will call that proof.  Keep your hand on your wallet when talking to such people.