Seriously. Zed produces a shocking amount of content and software. On top of all the software he writes, he's got multiple blogs that get updated frequently.
Clearly Zed Shaw has discovered self-replication and is using it to his advantage.
I do "Time Opportunism" rather than "Time Management". It's a subtle difference, but works incredibly well when you're in a creative+technical discipline like coding, writing, or music.
Pretty simple really. Instead of trying to control how I spend your time, I try to take advantage of whatever time I have to do what I'm feeling like doing. A key part of this is reducing the amount of bullshit and setup time necessary to do the things I want, and combining activities.
For example, I try to practice guitar 4 hours a day. I also like watching TV. So, I have a little practice amp in my living room that's always plugged in and has a cable so I can just grab a guitar, and noodle while I watch TV. That alone gives me about 2 hours of practicing mindless stuff.
That plus the list of shipped apps in the sidebar is incredibly impressive. Zed should write a book on GTD.