If you look at the people in your SL friends list, do you recall who they are or where you met? If we had hints or notes about this, it would be better than real life.

When adding a friend, adds any helpful information that will help me recall them later. "Where and when did we meet?" Perhaps have a field for free text notes I may want to add when accepting their friend request.

Any other details we could add? Their current user name / display name?

This information could be saved into the My Notes tab that already exists in Profiles.