Lots of chatter over the past few days about a possible acquisition of Feedburner by Google, starting with a “rumor” from Sam Sethi at Vecosys based on a “very trusted source” who said Google wanted in on the RSS ad market. Now multiple reports—TechCrunch, ClickZ—each quoting a single source say an agreement is in place. TechCrunch goes farther and pins a price tag of about $100 million, primarily cash upfront, on the deal, adding that the founders will be locked in for “a couple of years.”

A Feedburner exec told me the usual “no comment on rumors and speculation.” More as warranted.