RSS not yet mainstream?

Another article in the New York Times about RSS:

"Called R.S.S. (the initials are variously said to stand for Rich Site Summary, Really Simple Syndication and more obscure formulations), this increasingly popular online tool turns a morass of disparate information sources into an automatically generated and neatly organized index of the latest articles and postings"

You know we are not yet mainstream when the abbreviation periods are included in the name R.S.S. I mean when's the last time you saw H.T.M.L. or for that matter I.B.M?