Report: Twitter gets $48M a month in free publicity - Dayton Business Journal:

A new study puts a price tag on all of the mentions that Twitter Inc.'s microblogging service gets from the media — $48 million in the past month alone.

News-monitoring service VMS estimates there have been 2.73 billion impressions in the past 30 days, with TV reponsible for 57 percent of the value, newspapers 37 percent and magazines 5 percent...