SAN FRANCISCO - RSS ads appearing as individual feed items generate a 7 percent click-through rate (CTR), over nine times higher than ads displayed within content posts. That's according to a new study released today by RSS ad firm Pheedo, which compiled the research based upon its network of 8,000 publishers. "We're trying to find what's the perfect ad unit for RSS," Bill Flitter, Pheedo's VP of...