While this is a two year thread bump, I was introduced to this site over in the Broken Picture Telephone thread. Since BPT still seems to be having a bumpy restart, I'm playing both. BPT did precede DoD by about two years, but it seems as though DoD actually has a business model, whereas BPT is run by one guy and has no advertising, so I'm not sure how it will last now that it's back up. I do like DoD's drawing tools a bit better, even though BPT gives a better color picker. You can't see how a game is progressing until it is complete on BPT, which can be nice, but with it still being in sort of a closed beta state, it takes way too long for any games to get finished. I do notice that people on DoD are far more likely to intentionally derail a chain though.
Here's me showing off the stuff I've done in Doodle or Die so far.