Try [code]:help modeline`[/code]

If you really want to go for driving others super-crazy, try using a modeline in the first three or last three lines of the file, e.g.:
# vim: sw=4 softtabstop=4 ts=4 noet au smartindent
That way, anyone else who edits the document with vim will be stuck with your conventions.

But seriously, they will also see it in vim as you see it and leave it in a form that won't drive you crazy.