Devin,
I thought when we had this discussion previously, the word from admins was that these types of threads would be allowed, but 2+2 would not get involved in arbitrating any disputes or anything - basically, anything that people agree to is between themselves and has nothing to do with 2+2. Seems like there are frequent threads like this:
http://forumserver.twoplustwo.com/showfl...e=0&fpart=1
Admins should just state one way or the other whether people can post about sidebets/last longers/prop bets/etc. on 2+2 or not.