thanks everyone for your opinions. i'monna go look at her tomorrow evening, and if all goes well, i'll take it. no worries. for $25 the least i can do is give it a good home...

so i know that there's a formula for figuring what size frame you should get. how useful is it, really? isn't there more to it than just [inseam x .62 = seat tube length = bike that will fit you?] if i hop on this bike in question here and its a 52 and feels ok to ride, but the formula tells me 54 is my size, what does that mean? that i can only ride this bike 2 times a month?