I think things have changed slightly with the greek system at Tech. I do know that while I was there interation b/w the NPC sororities was not common. I do think that they have increased the interaction w/ sisterhood activities to promote the Greek 'Bond'. I know that I would've liked to have seen this while I was active. It always seemed that the sororities were always in competition with each other.

I like the idea mentioned above where houses exchanged pledge classes!