I have seen on other forums a solution that actually labels the poster as "spammer" instead of the title they would have displayed for the number of posts they have made. Perhaps you could look at a similar solution?
unfortunately that approach would require forum moderators and is a little subjective, but post like "I agree" and "yep" are obviously an attempt to increase the users post count
as you can probably see by my post count, I'm not in the habit of making inane posts. I only post when I have something to add to the discussion or to pose a question.... *dons asbestos armor* flame away kiddies
[FONT="Comic Sans MS"][COLOR="Red"]- Don't take life so seriously, it isn't permanent -[/COLOR][/FONT]