Hmmm maybe used in conjunction with a rating system.  Every registered user can rate any other user to usefulness.  So Jamie and others that I like listening to I can rate at a 10 and useless ones like emet I can rate at a 1.  Everyone starts at a 5.  that way I can filter those that have a rating less than five from showing up in the forums that I read.

I don't normally read forums, a little busy here but I have spent some time on channel 9, but I am already getting tired of hearing from some.

Just an idea that would work for me.