Yes, as suggested, the blogging feature is here. It allows you to post things you feel aren't so suitable for forums as they could be for a blog. Thus you blog them here. While forums are for support questions and answers mainly as well as discussions of specific technical topics and articles are for reviews, tutorials and alike (which have to be approved before submission), blogs are for your rants on certain technical topics regarding Free Software.
So, maybe you believe a certain thing should be done differently in a certain application or even an operating system, but you don't feel like it would be something you'd put in a full scale article because you just want to get it out in a more straightforward way (less preparation, more spontaneity) - well rant it out in a Nuxified blog! This is the place for your technical Free Software rants.