There's the Privacy Policy that has already been linked to, and there is a general forum FAQ (which I will need to expand on and link to, as it's burried in the CP somewhere).
As a general rule, linking to anything illegal such as cracks, keygens, warez etc... is a big no. I'll get something in writing just to clarify this
With regard to the social groups, I'm going to be closing those down tonight as it's getting quite confusing having 2 places to post. I'll be making a post on this in a moment. I also had trouble trying to find out how to ignore a social group request, if I remember, there was a small link in the top right corner of the social group page which would disable the notification. This should disappear anyway once the groups are gone