I did not see a thread for Studentuniverse, so I thought I would make one. SU is a travel booking site geared towards students. It requires pre-registration and proof of studentship. In addition faculty are allowed to book using this site also. From my experience, most flights are eligible for mileage, including United and US Airways. The advantage of this site is that is sometimes has great discount fares for some routes (NYC-WAS, for example). Often they will also list fares your would find through other booking sites, but it is always good to check here if you are eligible. I have often found fares 1/3 or 1/2 off the prevailing market fares. They also have an Asia special - $30 off fares using the Asia77 code. Details can be found here.