Maybe theymos could ever consider some sort of financial reward or some sort of raffle that reporters get entered into. Doesn't have to be much but maybe something would encourage an uptake. Maybe for every x amount of reports you get one ticket into a quarterly raffle or something.
As much as I'd like that, you'll probably see a lot more trivial reports. I could go to Off-topic right now and find hundreds of posts to report. But it feels so pointless to do.
If there is a reward, it will be based on the report accuracy percentage as well as the number of reported posts, preventing abuse from random accounts reporting thousands of posts in an attempt to outwit the system.
Even making good posts isn't that hard if you go to the right boards.