There are a number of behaviours common to those who want to make SO better. Each of them carries a "you've done all you can today" achievement with it:
- Post questions or answers on Meta that are well received --> rep cap on Meta some days
- work the SO review queues --> run out of close votes some days (the other queues never have enough in them for me to use my votes, but if someone does I'm impressed)
- Vote on questions and answers on any non-Meta site --> use up votes some days
- flag content --> use up flag limit some days
I may be missing a "janitor" behavior; edit one in or suggest it in the comments and I will.
Of these, which is more common? On a random day, will more people hit the rep cap than use up their close votes?