Silver Bullet Wiki?
Instead of emailing a meeting agenda, put it on a wiki page and email people a link to that page. If changes need to be made, anyone on your team can do so and everyone will have immediate access to the same, up-to-date version
And how does that differ from a Word file on a fileshare, a Sharepoint place, an Exchange shared folder or a Lotus Quicker?
A fool with a tool is still a fool. If people are not used to working on ONE copy of a document – no matter what technology – they will still end up with several versions of the document. Eiter bei printing it to PDF, copying into the calendar-entry, etc.
You can’t change the way people think/work by offering yet another tool. IMHO you won’t get „better” meetings by offering a Wiki.