I’d say many people don’t *need* to know what RSS (or a ‘feed’) is. They probably use it in places without knowing it.
As more publishers syndicate their feeds, more applications and clients will develop which read and present them (on all sorts of devices).
Data feeds and formats like RSS (and OPML) create a ‘platform’ to build applications on. Not everyone needs to know the code below. Sure, developers certainly do! (What percentage of those do or don’t know or use RSS?)
How many people out there know what the ‘web’ and a ‘webpage’ is, yet draw a blank when you ask them what HTML or CSS is. A lot, I’d say.
Most of us watch the TV – but what percentage of people know how the picture got onto the screen?
Like the internets – it’s all tubes and magnets and squirrels. Right?