Techcrunch is a tech blog that covers the dotcom industry and includes a signficant amount of Twitter news. It’s primary bloggers are Michael Arrington, Erick Schonfeld, plus bloggers that also write about Twitter Leena Rao, MG Siegler, Robin Wauters, Jason Kincaid
These are their three main Twitter streams:
@TechCrunch - http://twitter.com/TechCrunch
@arrington - http://twitter.com/arrington
@erickschonfeld - http://twitter.com/erickschonfeld