I don’t really pay much attention anymore. Some points add on some don’t. I just enjoy the site for the people and the discussions now. So that’s lurve our of the way.
As for Questions for You. I actually rather just reading through the questions myself, and activity for you, it seldom gets any higher than 6 because I check in all the time to see what people have said.
Activity for You is the most useful, and obviously comments.
(Aside to Fluther gods: I would increase my sacrificial offerings and daily obeisance if you would create something that allows more than one and less than all deletion on Qs, Activity, and Comments.)