I have noticed that as well and I realized that it was not only about quality, but just that members are giving out points for 'any ole' reason at all'. To counter act this and give balance once again to the feature I have done the following:
1. I am more liberal at giving negatives just the same
2. I took away the feature from the RPGs and 'unnecessary' Boards since I do not think it is right that a user to get a Charisma point for talking about a fictional pet in a blog type setting or other RPG
when someone who posts very constructively in a 'serious' Discussion Board gets nothing.
Also some users also counted on the RPGs
to get their post count up, which is no longer the case.