Black hat is basically about doing naughty things, though not illegal by any nation's laws, in regard to SEO. It can get you in trouble with the search engines. Now, a related thing is "gray hat" which is basically ethically debatable things that might not raise as much attention.
Now, I don't know any gray hat forums, but the black hat ones are noticeable as they are black. Well, I do like the color!
Now, I don't know any gray hat forums, but the black hat ones are noticeable as they are black. Well, I do like the color!