Sounds like something ideal for a StackExchange site.

My problem with StackExchange sites is that they're not that good as a reference. There are lots of great questions and answers (and lots of repetition thereof) but as a place to collate community knowledge about a topic they fall short.

Something like a wiki might be better, I suppose.

Surprised it doesn't exist already.

This would be great. I actually was searching for something like this only a week or so ago.

In my current role I have been doing a lot with Elastic Beanstalk. Many cool features are non obvious and/or not clearly documented. Especially in the case of extending its functionality with various hacks and recipes.

By now I have a fair accumulation of notes on this stuff, would happily pour this into a wiki.

+1 this. I haven't seen any type of self-serving moderation here, and using this forum you can quickly see who knows what they're talking about, and if they are affiliated with Amazon or not.