Facebook adds 'See Friendship' section

Facebook has added a weird section to show how many bits of your data it holds. And to freak you out a bit. Other than shrinking the font size of your wall feed, it's also added a 'See friendship' button when you leave a message on another person's wall.

For example, I leave Chris a message and you can then see the 'See friendship' button.
If you click on it, it takes you to a page that contains everything you've ever done together. Including giving you a lovely photo that has just the pair of you tagged in it.
You can discover all how anyone's related by typing in
http://www.facebook.com/[username]?and=[username]&ref=nf or by typing any name into the 'Browse friendships' section on the right hand side of the page. And thankfully, it only shows your current relationship status, just incase you've dated them at one point or another and don't want their current spouse to stalk you. Or worse.

Anyone else think that's a bit weird? Especially the browsing bit.