A website full of pedophiles who talk about raping children run by the internet's biggest pedophile, "sysop", IRL
name Kimmo Alm(also known as Sweden's biggest mistake). As if 4chan
wasn't broken enough, Kimmo has brought it upon himself to destroy /b/ even more by flooding it with spam
and threatening moot with all sorts of bullshit
They claim to be anonymous, but they aren't at all. Basically, Kimmo will allow you to post anything, as long as it's grammatically correct, spelled correctly, doesn't disparage his pedo tendencies, disparage him, or mention "4chan", "anon", or "/b/". Oh yeah, meme talk is illegal there also.
In other words, stay away. As has been said, it's probably being watched by the FBI.
An example of AnonTalk's spam:
when you're done being a worthless chantard"
Person 1: "Dude, did you hear about this AnonTalk website?"
Person 2: "Oh god stay off of there! It's full of pedos
and sick fucks."