I am a avid blogger and to me reading them is a part of the two-way process of blogging. Reading every post every blogger makes is impossible. The more people that you follow the harder it is to read everything your fellow blogger posts. You can only read so much at a time. Reading a brief summary is helpful to see what interests you fully. Commenting on things you like is great because it gives good feedback to bloggers you follow. Read and write often its a good practice.