Xconomy.com is a well written and produced web site that describes itself thus –
the authoritative voice of on the exponential economy, the realm of business and innovation characterized by exponential technological growth …
Sounds a little Wired/Gilder-like, true, but this is the best way I’ve seen to keep up with developments in the Massachusetts technology markets. For example, their October 17, 2007 article, Boston: The Hidden Hub of Music and Technology, with its list of local music/technology companies, is an example of the kind of thing you would be unlikely to find elsewhere.