MediaOnTwitter's mission is simple: It's a geographically organized list of
"Journalists, Bloggers & Media Outlets on Twitter"
Another list, referenced at MediaOnTwitter:
And another: http://www.twellow.com/category_users/cat_id/50
These sites could be gold for anyone attempting to create a 21st-century online press center. Obviously any PR department should be following all the relevant journalists - now, how about a tool to aggregate their tweets, organized by relevance to your agenda? Sort of like LinkedIn's "Company Buzz" application (discussed here) but more focused on professional journalists...
Would someone get on that please?