What I don't understand is why there aren't open online magazines/blogs for this kind of stuff. I.e. a blog with well-defined subject where there is some minor

What I don't understand is why there aren't open online magazines/blogs for this kind of stuff. I.e. a blog with well-defined subject where there is some minor editorial oversight to filter out garbage, but where anyone can submit an article. This strikes the perfect balance between individual blog and a publishing platform. It can have features specific to the subject. The quality will be better. I've run a website like this with a bunch of people in the mid-00s and it was great. It had a real consistent community, and there wasn't a split between "staff" and "readers" which creates so many problems for more traditional online magazines. The whole Web 2.0 movement vilified editor, but I think this was a great disservice to the Web. I'd love to have a website like I described above for programming stuff. It would allow me to concentrate on content, rather than maintenance of my own website and constant self-promotion.