At Photography Stack Exchange, we have an initiative to convert some of the popular and helpful blog posts which fit the format to be self-answered questions, or in some cases answers to existing questions. See http://meta.photo.stackexchange.com/questions/4264/should-we-migrate-posts-from-the-blog-to-be-self-answered-questionsShould we migrate posts from the blog to be self-answered questions?
This didn't get much attention when I proposed it a couple of years ago, but I'm pushing it now. That obviously won't work for all content, but may be useful for redeeming some of it.