I am fairly active on stackoverflow.
After many (unsuccesful) tries to come up with a regular tech/java based blog (I used wordpress, dokuwiki/blog, blogspot, …) I finally ended up to have a jekyll/github setup. I can just write simple markdown files and push them to my repo and I am done. Works for me. There is still a lot of work to do (see my issues, and provide new ones if you find something that bothers you).