My general rule is, if it has kanji on it, order it. It's automatically cool.
I found an article about the
world’s most recognizable symbols. It seems pretty on track, but personally I think the Atari logo is more recognizable than the Virgin logo, especially since they have more or less flamed out recently. Also, this article claims the atheist symbol is the worlds 15t most recognizable logo and yet I don't think I have ever seen it before. I think someone is either grasping or experiencing wishful thinking. Also, whatever happened to the Russian hammer logo?
The best symbols are simple and easy to recognize. I like the pocket protector we cooked up for this sight, but I think in the long run it has too many letters. I need to come up with something simple and clean. Time to get creative I guess.