I lend out my mountain bike, no problems with that, it only cost me $250 and the fit is much less important than my road bike. My road bike however... I'm a bit more picky with that, I'm about to go on a ride with my best friend whose looking into getting a new bike this weekend. Going to mark the current location and then lower the seat and let him try out my CAAD9-5 before he wastes his money on another mountain bike.

Most people wouldn't be able to ride my 9-5 anyways, I have fairly long legs, they would never reach the pedals.