Feedster this week announced the launch of an automated, self-service engine for the Feedster Media Network; the tool helps publishers sign up for and participate in Feedster's RSS ad solution. Advertisers will be able to reach users via RSS ads in some 20 channels, including technology, arts & entertainment, health & fitness and travel & recreation. Advertising on the Feedster Media Network will be priced on a variable CPC basis, depending on which channels are selected by marketers.