Part of the problem (actually also a great feature) with Google Toolbar is the ease with which one can blog a post.
See a nice article online? Putting a blog post on it is a simple 3-click process. Except you want to properly comment on it. So you perhaps put down some points and save it as a draft.
The problem is that you sometimes never come around to editing that draft post. You end up with lots of draft posts. Bummer.