I'm a little peeved.  I can't imagine how a technology such as RSS could bear so many different names.  Did someone say "Hey, I think we should invent a technology called RSS. What do you think it should stand for?"  Supposedly, RSS was developed jointly by UserLand Software and Netscape.  Would someone please tell us which of the following names RSS really stands for?

Dave Winer and company think that it stands for Really Simple Syndication.
Jon Udell and other notable folks think it stands for Rich Site Summary.
I think I saw another mention of RDF Site Summary somewhere as well.

Stop it already!  Duke it out and declare a winner!  But can we have a definitive answer?  Thanks to Sam Ruby for the great background details.