Hello designers, most of what is ending up in the "not interested" column is because of stereotypes that we want to avoid. Again, my best advice to be successful in this contest is to focus on crisp, elegant design, help us break out from the cliche, so we can appeal to the broadest market possible. Think slick, Web 2.0 or software company crispness; or design the logo as if we were something different, like a web design company.
Here's an example of a car company which broke out of the mold with crisp imaging:
http://www.zipcar.com/Good luck!
Drew