silent rally in DC?

Did you hear about it, Mayday for Marriage, this big event that had maybe 150,000 gathered on the Washington DC Mall last Friday October 15th? I didn’t pick it up on the mainstream media nor on the blogosphere. I’d imagine the organizers put forth quite an effort to put the word out and invite the speakers, but wonder why so little buzz was generated? Was the unintended result to talk amongst themselves (as conservative evangelical Christians), rather than putting more energy towards press junkets and word of mouse?