Intellectual way to track projects in OmniFocus

[Barb]

Sure:
"Waiting for John re website news and article"
Context: @Waiting OR @Delegated Projects (which you might like as a context)
Due: 1/10/2012

The key, of course, is that it's not your project, but John's project.
Of course, you might have a project, depending on your trust in John, like
"Ensure John meets 1/10 deadline on web updates project"
Web updates is still his project, but you have your own.
In your project, you might have reminders to check periodically with John
on his progress. On the other hand, you might have that check built into a
regular meeting and only need a single waiting-for on your list.

This is really terrific advice! I like the "Projects Delegated" or "Actions Delegated" to be on a different list than my other waiting for items. That way they will really stand out and make it easy for you to see when you touch base with each individual periodically.