GitHub turned out to be a pretty decent place for collaborating on various lists. I mean, the list of awesome lists[0] is currently the 23rd most starred GitHub project. I'm using GitHub both as a collaborative tool for creating lists and as my own tool for creating lists (as an example, a list of books I have read / am reading / planning on reading [1]). [0] https://github.com/sindresorhus/awesome [1] https://github…
For example, I've been using it as a collaborative writing zone with a friend of mine. Our use is definitely nothing too remarkable, but as far as collaborative writing goes, it's not easy to imagine a product with more technical capabilities than git.
The real hurdle is just non-technical people being intimidated by the terminal / command prompt. I'd like to think that stigma is on its way out, but wouldn't we all?