I have almost finished version 1.3 of my Phonebook sidebar plugin project on OpenNTF.
New features include :

- Multiple datasources can now be selected
- Show contacts in a tree structure, categorized on application or location
- Sametime livenames online awareness
- On mouse hover on a contact it will show business cards

I'm looking for beta testers and some feedback before I post this release on OpenNTF.
Also, if you have any additions you wish to be added to this plugin, let me know.