We want to convey a professional & modern yet cool & fun feel.
The ideal logo would be a combination of a graphic element and our company's name "Centripetal Software" in a clean and interesting typeface. We should be able to use the name and logo separately. We don't mind if the "Software" in the name is smaller, "Centripetal" should pop more than "Software".
The logo should incorporate the notion of Centripetal Force in some way. Particulary using the definition "force that is directed inward toward the center". See http://en.wikipedia.org/wiki/Centripetal_force
As with any logo, we would prefer colored logos that work well also in grayscale, B&W, small sizes, 2D, etc.
The logo will primarily be used on white backgrounds but should look good on other light color backgrounds as well.
We're not too particular about colors, but have liked other logos that we've seen that incorporate oranges and blues (not necessarily together). Much of our current application uses the same color schemes you see on the http://aanhouca.tech.officelive.com/default.aspx pages (logos, gradients, etc.)