The motivation behind the blog is more complex. I've been thinking about this idea and slowly have been posting my code on github. Github is great as a code repository, but not as an idea repository. Hence, the blog.
Second, the past several months at Stern have been difficult with the passing of Dave Backus. In the memorial conference, several of Dave's colleagues noted that he was a serial note taker. As a colleague of Dave, I saw this first hand. Some discussion may come up and several days later Dave would have read a bit on the topic, sent some emails around, typed up some notes, and circulated it. Much of this stuff posted on the web for graduate students (like myself and Mike Chernov) to find. I really admired this, so hopefully this blog can replicate some aspect of this process.