Logo for Grad Student Forum-- $250

I need a logo in .psd format. The audience is grad students aged 22-28. The logo should be fun, yet mature, as well as friendly to both genders.

GradGab.com

Desired Color Scheme:
Bright enough to show against a navy blue/black background

Desired Style:
Open to different ideas, so long as they suit the audience.

Accepted File Formats:
layered .psd

GradGab.com is a forum for grad students to discuss grad school and life in grad school. We need a logo that caters to this audience...men and women aged 22-28 who are adults, yet are still youthful and fun loving.

The colors should be bright enough to show against a navy blue and black background. You can see the forum at http://www.gradgab.com to see which colors you think would work well on the rest of the design.

I'm open to lots of different ideas and angles. Just be creative and stick with the audience. I'm not crazy about overdoing the graduate or student theme, like using graduation cap graphics, but who knows, maybe someone can pull it off... There is no slogan.

This contest is not for a license. I will own full copyright in the logo.