As of today I will use github pages with jekyll for my blog. The reason is quite simple: I love markdown. Ever since I started my blog I used Wordpress, but I always hated it that I had to use plugins to get what I need (code coloring, better editor, etc.). In markdown everything I need already exists and as a side effect my posts will get a (better?) version control too :)
But what about the old posts
I will port the important ones to the new system as soon as possible.
For the new system I used jekyllbootstrap to quickly get a and nice blog page. If you want to do something similar, you should check it out.