Guys, I'm doing link-building by posting my new blog into targeted Facebook groups. It kind of works, they drive a lot of traffic (I would say, 500 hits by posting one link in two groups) but man, there's always that freak that argues and complains about the quality of the article. And it's not that the article is low quality, many like it. It's just that there's always "that dude" hanging around who wants to throw shit at my blog, and I don't like this. How are you getting on with FB Groups for link building? Does it work? Pros and Cons?