Next up: a notifier for who-has-you-on-the-break-up-notifier!You like someone. They're in a relationship. Be the first to know when they're out of it.
Log in with Facebook. It's free for now, so strike while the iron's hot.
Choose the friends you're interested in who are taken.
Get an email whenever the relationship status of your chosen friends changes. Yes, it's that easy.