The best advice I ever heard about logos was from Mat Groening, creator of Simpsons and Futurama. He said, "Whenever I make a main character, I try to make them recognizable as a simple black and white silhouette". Think about Bart, Homer, Marge, Lisa, Bender, Fry, Leela. All of them instantly recognizable with just a few solid lines.

If you do the same with your logo, it will be super memorable and recognizable. Think about all the best ones -- Nike, Apple, Mcdonalds. The reddit logo and HN's "Y" follow that rule too.