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. Maybe it doesn't even have to be a cash prize if you could find some people to donate some rewards, or maybe get someone else to sponsor it. If theymos could give us the reporting stats every x amount of time maybe it could be a community driven incentive that people donate to or someone else sponsons.
This is not a bad idea and I think this would actually increase number of reports, but if there is any financial reward than we can expect abuse from some members.
If this is ever implemented it would have to be with random raffles, not related with number of reports from members.
That means that anyone with good reports could win this reward, not only members with most reports.