I found the same problem as Randy documents in The long pause.
I found that I soon lost interest in all the blogging about blogging and how lbogs were a perfect fit for improving learning. I still value blogging, but I do it for myself. I try to say the things on my blog that I want to say, not the things that will get other people blogging with me.
I am ready to leave blogs and blogging as a tool that teachers may use rather than as the tool for the future of teaching. In other words – if the blog fits, use it.