They claim (and Robert Scoble repeats the claim) that according to the study only 4% of internet users are using RSS.
I have news. It's not true.
I know, because I blogged about the research months ago. The study actually showed that 4% knew they were using RSS, while 27% were using RSS without realising it. I quote (from the study):
"27% of Internet users consume RSS syndicated content on personalized start pages (e.g., My Yahoo!, My MSN) without knowing that RSS is the enabling technology."
So according to the study, 31%, not 4%, use RSS.
Not only is Slashdot 3 months late in picking up on this study, but it completely missed the point.