One general theme from Feedburner's testing will be of special interest to publishers: click-through rates from RSS feeds back to sites are decreasing. The company says this is happening across all the feeds it manages.
"If RSS popularity continues to increase, and it becomes less and less a vehicle for driving site traffic but more and more its own content-viewing medium, that presents an interesting situation to publishers," Dick said.
He admitted, though, the company didn't look at full-text versus partial-text feeds. It could be readers are becoming more reluctant to click out of the feed reader, but it could also be that more publishers are providing full-text feeds, giving people fewer reasons to click away.