What I do with East Bay Cohousing is post events like this as regular MeetUps but clearly in the text say: Note you must register/pay/whatever on this other site and then have one of the survey questions be "have you already registered on (other site)?"
P.S. Did you get a card deck in the mail Saturday? That's from me, and I'd love to talk about it sometime before you tell the world about it.
On Sun, Feb 12, 2012 at 7:47 AM, Ann Zabaldo <[address removed]>
If I can figure out how to post this as a Meet Up w/ no registration through Meet Up I will do that. Otherwise ... this email is your notice of this fun event!