I love open source, I really do (as long as its free as in "free to kick ass"), but I can't stand the attitude some people show, mostly in the "What are you working on" forum. They see something they like and immediately want you to make it public, be it some UI code or some dynamic shadow shader.
Those people however, are mostly known for sharing nothing with the community, probably because they are too lazy or stupid to create something on their own?!

Like I said, I love open source. I already shared tons of code in different languages, but people that just come to me and demand to have my stuff because they want it make me want to punch a dolphin. Stop it already, or at least show some respect to the creator, but don't behave like greedy douchebags (or I will fucking punch the innocent Dolphin and its going to be all your fault!)