Why can't or won't yahoo eliminate all the "bots" which are noting more than come ons for webcam paysites.

It seems that 98% of all "female" participants on Yahoo are not real people and are simply trolling to get others to take their bait for an xxx rated pay web site or cam. AOL chat rooms never had this problem, and although Yahoo is a better vehicle for chat, and legit cam use, the proliferation of the "bots" makes this system a real pain in the ,,,yes.