Radius (formerly Fwix), has raised $12.4 million in a round led by American Express with participation from Comcast Ventures, Western Technology Investment, and BlueRun Ventures. By combining hyper-local news with data from Twitter, Facebook, Yelp, Localeze, Acxiom, and CityGrid, the company delivers local business data and insights to salespeople to aid in prospecting for customers. [Source: TechCrunch]