I knew ZenCoding, and it looks pretty cool, but I’ve actually bought Snippet Bin when it just came out. When I saw your link I was really surprised anyone else knew it! :D
I was really looking for an app that works anywhere on my comp, even in browsers and shit. Snippet Bin has that. It takes a little while to insert everything, but once you’re done it’s like personalized to how you code, and it makes it very customizable, you know? that’s just my 2 cents..