I often wish there was a site like SO with a great community around building task-oriented code-first samples to replace shoddy project documentation. Often with SO the accepted answer is too specific, outdated or not descriptive enough but its existence locks out better responses. I would prefer a canonical, up-to-date wiki answer than strict authorship most of the time. I've taken a few stabs at building a solution to this problem but I think finding the right mix is super important.