I get all the fuzz about only being able to learn if you do the work. But frankly, as a hobby programmer with a rather unusual workflow/toolset and a love for the command-line, it has never been so satifying to scratch a few itches I've always had but apparently never was motivated enough to really follow through. In the past 6 months, I've "written" at least 3 tools which I kind of always wanted, and which I now use on a regular basis. AND, I finally have a peer I can talk to about the code I'm trying to write. Something I basically never had, because all my FLOSS projects were small-very-nieche-one-man-shows. Its nice to be able to pretend to have a coding friend :-)