I've made a decision to read only blogs that somehow relate to my own professional, theological interests. That means I will no longer read a lot of personal blogs of friends. I also won't read scholarly blogs that aren't likely to include material that will help me in my work. The reason for this is so that I can discipline my reading and therefore get more scholarly reading and writing done. I need to focus on that in order to maintain my avocation to scholarship.
I have not changed my blogroll to reflect this, but I will in the near or remote future, as I have time.