It's an interesting solution, but I have to agree with those that say this would open up more problems.

I whined a couple weeks ago when I noticed some (8?) of my first nodes all dropped a rep. That happened two days in a row and then in CB someone noted that a bunch of their old nodes gained a rep. This either happened right after or before votes came in. I was on line at the time so that's how I noticed and I setup xrepwalker to just see if I could get a better pattern. Would of needed to do a user watch as well, but by then it was past worrying.

I don't think it was personality voting, but a bot that was just dumping votes to get the %25 bonuses. Of course that could then be used for arming a better bot.

I think we could setup something that would catch simple or single-minded bots. Of course, that might also catch the person who just did a personality shoot as well.