As you may or may not know, I work for Gerson Lehrman Group as a UI Engineer. While this is more of my professional site, I don't talk a lot about my work. Truth is, I really dig it here. I work with some fantastic fellow UI Engineers: Garann Means, Zubin Tiku and Chris Bosco (and some others but I don't know their blog URLs, hint, hint).

I really like Gist, a lot. They are full on git repos and as such have version control, remote updating, all of the things you would expect out of a github repo including most of the social aspects. They also have the best syntax highlighting I have seen. Yes, there are other libs that do it in various languages, but I really like theirs and I like having my code in 1 place.