Worse IMHO, is customers/people/boneheads that have switched to html-only mail, just so they can force this font upon us, as they like it so much.
Or those who've switched to HTML-only mail for the purpose of delighting in formatting goodies. I'm not so miserly as to mind the waste of bandwidth (although there is that); it's the sheer unreliability of it that annoys me. The number of times I've advised clients to stick with plain text, since it won't end up garbled and mangled and is just as easy to send from web mail as anything else...
