Some of you may have noticed that StackOverflow just inaugurated a Documentation feature. It's basically in adition to the Q&A traditional site. I was wondering if something of the kind would be possible and/or useful on Mathematics StackExchange. This would be different from simply answering your own question. There could be diverse examples of applications of mathematical concepts, or multiple proofs exposed for a certain theorem.
This idea does not seem to have been much discussed in the past (couldn't find any question about this on MSE). But now that this has been implemented in another StackExchange site, it becomes different.
Do you think that creating a big mathematical documentation would be possible? With the amount of knowledge in here, and many volunteer members, an incredible documentation could be built in a few years. Do you think this is useful? Or is there, in your opinion, enough of this on the Internet? I'm really looking for opinions here, with argumentation on whether or not this should be done.