Jams seem set up to be competitive. We could ignore that, or maybe make a competition about commits?

• Nobody would approve their own commits.
• You get a point for approving another’s commit.
• At the end, we just add up commit totals (I won’t enter myself, as I’ve already put in a few commits to set things up)

Obviously it’s subject to abuse, so we’d have to rely on people being fine, but I don’t think that’s a real problem.