Hopefully it will get better with changes already planned (like more inclusive qualifications for new adventurers that should ensure there is a much more healthy presence of new adventurers to occupy the channels' mentors more prone to ... distraction. That said, if it's actual spam, the offenders should certainly be reported and kicked.

As for the mentor roulette...it's not ENTIRELY to benefit the mentor. I know I filled a slot recently for a new player's guildhest with the thing.

So...hang it there. It will get better. =)