I'm using GitHub. It may occasionally be down, but they have a really innovative new server architecture, and once they've ironed out the problems (which I beli

I'm using GitHub. It may occasionally be down, but they have a really innovative new server architecture, and once they've ironed out the problems (which I believe they've almost done), it should be as stable as a rock. Plus, it's git so you have a full clone of the repository that you can work with even while it's down.