OK, I understand. Mostly (I think) the difference between free-and-mostly-unwanted, and paid-forum-supporting.
How would you view an advertisement (for instance for MA3) that would only come the few people in a
large social forum, who had mentioned that they have an aquarium and are really interested in PCs and are "stressed out"?
Assume that a company pays the social forum for each time the ad is sent to somebody, thus supporting the social forum - and incenting the company to closely limit the people it's sent to
I don't see a problem with that. Its supporting the forum