I couldn't figure out what or where it was... until I clicked on your name, Tulip.
It's a different way of displaying the profile, and it keeps a tally of who's been peeking at you (and their name). I guess you can leave notes on someone's profile, too. Like a public PM?
I got to be the first person to peek at Tulip! Recorded for all posterity! 
"Knot, the Peeping Tom!" 
Not quite sure what the "friends" thing is or the purpose it serves. I'm sure someone who does Facebook or Myspace or something will come along and explain it all.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson