anyone know anything about Indiana's informal recruitment?

i wasn't going to say this, because i didn't think it was necessary, but now that i feel the need to defend myself, i will: i got invited back to four houses for eight party, all of them "upper tier" (which i personally think is bogus - no sorority is better than another because they have "hotter girls"). i got dirty rushed at two of them (and yes, i did report it) and the other two i didn't like based on OTHER factors besides the fact that our conversations were uninspiring. one of them had to do with their involvement (or lack of it) on campus, another had to do with their gpa. and i honestly can't say that i wasn't influenced by what i heard (reputations and such), but i can say that i gave them a fair chance despite it.