Thanks for posting. Most of the PersonalBrain features are available when accessing through WebBrain.com. Some features that are currently missing are the ability to edit the calendar, tags and thought types. But we're working on adding these in the future. You can always download the .BrainZip from WebBrain and make your changes locally and then re-synchronize.
As you are typing the name of a new thought, the existing thought list will pop up below the new thought box to let you know if you are about to create a duplicate.
I personally use GoToMeeting for video conferencing.
And finally, TeamBrain was specifically created for groups of users that wanted to collaborate, but were not in the market for BrainEKP (our enterprise product).