“More and more,” writes Dave Winer, “I use Twitter to write the first drafts of posts that I then write more fully here on my blog.” You’re not the only one, Dave. For me, I think it’s because when something sets me off, I tend to react to it as I’m thinking about it, in real-time; I can’t wait until later. So I “get it off my chest” on Twitter, and then massage that into something for the blog later on.