Let's send a massive barrage of protests here instead: https://io.help.yahoo.com/contact/index and see if that works.
Report that some of the idiotic posts are obscene and Yahoo will be reported to the authorities. Maybe that will get Yahoo of their duff.
Please take some time even if an hour or less a day to save this message board. The last time I opened every abusive message going back for days and reporting them as abuse and kept at it and at it, it must have resulted in Yahoo taking note because it resulted in a few days of relief from Liars, Adulterers and Perverts of the teapartyisaplague ilk. If we all participated in a mass campaign, perhaps we could launch a denial of service against the Liars, Adulterers and Perverts sabotaging this board.