I am subscribed to many interesting bioinformatics blogs. Some of them are related to my research field, while others not. Sometimes I am really impressed that some of the posts are in fact real pieces of scientific work, that although they do not follow strictly the scheme of a scientific paper, could be easily converted to a research paper. Therefore I am intrigued why these people do not convert sometime their most relevant and accessed blog post to research paper, do you know why? Besides, do you know successful cases where people have converted them to papers?
Also if anyone's interested, this example came up on twitter: http://twitter.com/kaznatcheev/status/262874569080188929 - though it's a StackExchange -> arXiv deal rather than the blog post -> peer-reviewed publication you're interested in.