I'm still looking for a decent logo. Eventually, I hope to use a stylized blue brick. That name has a story behind it, and it evokes tinkering, so I'm keeping it. (This site was Rock Lizard for a spell, cause that's what Evan and I wrote.) One idea I had before invoking the new name way a yin-yang type thing. (As the favicon illustrates, I like little mathematical graphics.)
I wrote a small sketch that draws a yin-yang, and changes the amplitude of the center portion over time. I think it looks pretty cool, especially with fading built in.