I am also curious is the information hover box is configurable, especially in an Active Directory environment where I have plenty of Address, Telephone and other contact information available. I am running:
Spark Clients at 2.0.5
Wildfire Server 3.1.1 on a Windows 2003 Standard Server
I would find the ability to populate this box with some of their vCard information far more useful than “notes”. The difference being that if you have 20 people in your contact list it is going to take a lot of work to put notes with the information which would interest me (what is already present in their vCards) where as access to some of this simple information without having to go read their profile would be a great time saver.
A scenario would be you want to call/fax someone in your phone list, and although you can remember who each person is, you haven’'t memorized all their phone numbers. A quick mouseover of their name and you type their number into your phone without having to access their profile (some 3 clicks to get the phone numbers).
Anyway that is the kind of functionality I was thinking of. I guess I don’'t see the usefulness of notes at the moment.