I've decided to move my blog to a GitHub + Gist since it's easy to crosslink and include code snippets. Visitors can write comments with their Github account and don't have to leave the site. The Github stars (likes) are also very nice :-) As "Index" I use a special Github Repo with link collection (date, title, url) to my Gist blogs and use Twitter to promote my blogs. Of course you could use the Github JSON API and jQuery to integrate it into youre website :)