I'd like to join the proventester group, so my occasional karma points will not be less worth than those of other testers. I don't plan to vote on hundreds of updates without substantial testing, just because the system requires the karma points.

According to the bodhi metrics, I've been among the Top 10 Fedora Testers for several dist releases (e.g. rank 2 for Fedora 11) prior to the release of fedora-easy-karma. Not just with votes, but also with hints and advice (also in private mail) about how to resolve issues caused by updates.

I've read https://fedoraproject.org/wiki/Proven_tester and know how to enable and use updates-testing and the fedora-easy-karma tool.