No pledge for me unless it's sponsored by and sanctioned by InsideFlyer. I've run mailing lists and bulletin boards where the community tried to police itself and set rules. Doesn't work and never will.
If InsideFlyer cares to change its TOS for this bboard to include a pledge I'm all for it. Otherwise, I say you take the good with the bad to participate in a public forum and people need to deal with it like they would deal with someone they don't like with or agree with anywhere else.