quite frankly you can only talk about philanthropy for so long. that's probably not the reason most girls will join. let them know it's part of it, but there are other things too.
you can't talk about boys/booze, but you can still discuss things like:
school sports
music
clothes
movies
pets
why the Eagles suck (sorry, had to throw that in there LOL
)
The rushees want to know that you're not just going to be sisters, but that you're going to be friends they can have fun with. Every conversation doesn't have to center on the sorority - if you read the rush stories on here the rushees say when they were having the best time and liked the group the most is when they just got into a totally random convo and forgot they were at rush. It's two people talking, that's it.