That would work, but a karma threshold would work just as well (for the problem at hand at least), and be easier to implement.
Yep, and it could be tiny -- five points would probably be a high enough threshold if the goal is just to eliminate jewelry spam and the "everything else is just another trainsmash of the Gregorian Frequency of disconnected heart bio-rhythm" guy.
I'm mean most of us would like a friendly bot to chat with, but this is just paperclipping the section (no offence clippy), by now its starting to be a real trivial inconvenience for me and it reduces my desire to check out new topics.