dread questionmark disease definition, from Internet Connection, Inc.

n. The result of saving HTML from Microsoft Word or some other program that uses the nonstandard Microsoft variant of Latin-1; the symptom is that various of those nonstandard characters in positions 128-160 show up as questionmarks. The usual culprit is the misnamed ‘smart quotes’ feature in Microsoft Word. For more details (and a program called demoroniser that cleans up the mess) see http://www.fourmilab.ch/webtools/demoroniser/.