Discourse seems very nice and can be used with blogs as this site has implemented:
Should I switch to Discourse right now?
Probably not.
Discourse is brand new. Discourse is early beta software, and likely to remain so for many months. Please experiment with it, play with it, give us feedback, submit pull requests – but any consideration of fully adopting Discourse is for people and organizations who are eager to live on the bleeding and broken edge.
There is tremendous technical and sociological friction to change in any established community. Consider carefully whether your community is willing to adopt such a big change. Perhaps start a discussion about even the possibility of such a change well in advance.
We believe Discourse currently makes the most sense for new discussion communities. In some rare cases communities may have a discussion platform that they intensely and actively dislike, to the point that they are willing to throw the whole thing away and start over.
Also, pretty much any blogging solution is going to be using a database in the back end so a strategy for the mirrors will be needed before long.