Please listen to the suggestion about the bonus thread. I have flown "2" times in the last 2 months, GSO-PHL and GSO-FLL, and because of all the bonuses I have gotten, those 2 flights have netted me 17,000 miles.
I am taking my first "mileage run" this weekend to NYC, just to finish up the Silver Challenge with USAir. They have some great promotions going on, you might be able to qualify for the silver challenge with this one trip if you sign up, and may indeed end up with enough miles for a free ticket.
Cindi