'Someone added you as a friend' email
Short, concise description of the idea
An option to be emailed when someone adds you to their friends list
Full description of the idea
Optional - settable in the same place as setting the option to be emailed notification about replies to your comments and entries. Emails you yo tells you someone has added you to their friends list and who it is. Gives you a link to their journal so you can read it and decide whether to add them to your friends list. Gives you a link to be able to add them to *your* friends list in return. Knows if they are already on your friends list (in case they added you in response to you adding them) and tells you.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation