if they are serious about their forum, they should have been atleast for a while, limit the maximum posts a user can post in day. Best choice is just to pick which users they will be paying according to their ranks, post quality, etc.
The problem is, if they take these measures, then nobody would post in that forum because pay/quality rate is not good enough to attract good posters.
Right now they can only attract spammers and they even fail at it.
They never try to bring some good quality on forum mostly they was working on traffic as they have their desired traffic then they do some changes and ban few countries just because of low quality but this move hurt them very badly and now they are doing something about quality but still fail to do some good as this is just spammers heaven nothing else mostly things without any good object ends like this.