I pulled this out of searching the FAQs:
The buddy list is used to keep track of the friends you have made on this forum. By going to your "Open Buddy List" in "Quick Links" menu of the navbar, you'll be able to see which of your friends are currently online and send them a private message. Adding people to your buddy list also allows you to send private messages to multiple forum members at the same time. You may add any member of the forums to your buddy list by viewing their profile or by going to "Buddy / Ignore Lists" in your "User CP".
It doesn't sound as if it does anything that can't be done manually...
Co-author (with my daughter) of “Raising Your Money-Savvy Family For Next-Generation Financial Independence.”
Author of the book written on E-R.org: "The Military Guide to Financial Independence and Retirement."
I don't spend much time here— please send a PM.