an idea for cleaning up threads: often a thread will get way off track as we all know. sometimes this is a good thing (cool new direction) and sometimes it is a bad thing (crappy or plain dumb direction). so how about a flexible policy of ET posters voting on when a subtopic should be deleted and when it should stay? for example, if a good thread devolves into a dumb subtopic, someone could speak up and say 'i vote this subtopic be deleted.' if enough votes are collected or if the moderator deems the subtopic to be sufficiently dumb based on face value, the subtopic then gets deleted (along with all related posts). voila, cleaner thread. the voting element lets good subtopics stay while throwing bad ones out, resulting in cleaner and better threads overall.