Utterances is a free and lightweight commenting system that requires minimal configuration on your part and is powered by GitHub. I'm using it on this very blog.

Ever try installing WriteFreely? The instructions on the official website aren't completely clear and won't work if you're using Ubuntu Server. Here is what worked for me, and hopefully will for you to.

The goal of this blog is to prevent others from making the same time wasting, expensive, and frustrating mistakes I’ve made. As well as sharing what I have learned from knowledgeable others.