[myrdev]

It isn't really the normal use for it, but I made my own subreddit for this - I only use it as a personal repository of information, but it would suit pretty much all of your requirements, and it has stats on usage etc built in :P

[Spittie]

This went over my mind, but I've read about other people using a subreddit for that. Indeed, it looks like a nice option - free, can add content (using markdown!), other people can comment/vote on it, easy searchable.