Here’s a simple, pragmatic tip: I have seen geographically distributed sales, presales and marketing teams use WebEx/GoToMeeting/Live Meeting (etc.) to conduct their weekly status/progress meetings on-line. This is a great way to build skills with the tools, with passing control among meeting attendees and practicing the use of the various annotation, white-boarding and other capabilities.
There is often a great deal of cross-learning that takes place – “Wow, I didn’t know WebEx/GoToMeeting/Live Meeting (etc.) could do that… Please show us how you do that!”