Sunday, May 06, 2007 by Dave Winer. A few days ago I wrote that Twitter is a very nice low-tech notification system. I had an application in mind, and put a first step on my to-do list. I started a new channel called dwcodeupdates. The content in this channel will be of interest to at most 10 people, geekish users of the OPML Editor, but the concept should be interesting to members of coding commu