When there was more traffic, some people would outright ask for other users to be rulebook replacements, others would post whole unit entries, and so on. We don't so much as modslap anyone for it these days, generally just a tap on the shoulder. And posting a limited amount of stat or point information can be relevant to a discussion and are allowed. "The Salamander's Toothpick is 50 points, don't waste points on it," or, "the Str7 is better in my opinion for dealing with flyers."
Other sites have been targeted by GW legal, and some ... well, practically unrelated things.
The book Spots The Space Marine
was pulled from Amazon after Games Workshop claimed it owned the term "Space Marine." Bad news for Alien
fans. Thanks to the perpetually exceptional Electronic Frontier Foundation, it's back: EFF Helps Return 'Space Marine' Book to Amazon After 'Trademark Bullying'
Board Game Geek was hit by a cease & desist letter a few years back.
I could care less about Games Workshop's villainous, aggressive notion of protecting its copyright, but I will do what is necessary to keep them from harassing 40kO.