another thing....
I really was freaking out about rush and being a junior, but Ive been looking at the stats from 1989-2000 (i dont think the trends change that much from year to year) and that many juniors drop out before rush and before pref. However, for the juniors that last to pref, the bid rate is between 90-100%. Mad cool.
http://www.sa.psu.edu/greeks/PHCformalrush.shtml