Sorry if this is an old, dead horse on this list, but does anyone see any substance in the supposed "separation of content from presentation" feature of XML?
Since we had this years ago with databases and server-side scripts, I'm thinking this (and certain other misconceptions) are just attempts to create visual, easily demonstrable features for what is an inherently non-visual technology. Since XML no doubt owes some of its hype to its (distant) relation to HTML, which is visual, people wanted to be shown features of XML that they could "see."
In the same vein, has anyone else noticed lots of demonstrations of XML-using applications that make a point of exposing the XML itself, as if its readability were an asset to the end user? Since XML works in the background, it's hard to demonstrate its effects on the application from the user's point of view.
I'm thinking that being able to explain the root causes of these misconceptions will help me in explaining to people why they ARE misconceptions.