Can I get your digits? Oh wait, they're on facebook

Not exactly sure if this is old news or not, BUT: apparently if you use a facebook mobile app on your cell-phone, your phone number is now visible to your friends (and maybe their friends? depending on your settings) under the "Contacts" section. Obviously this is not something most of us want made public and its only a matter of time (minutes) until they use it for marketing. So anyways, here's how to take your number down:
--> Account
--> Edit Friends
On the left --> Contacts
(Et voila! Everyone's phone numbers! Eep!)
Click the blue link that will be shown in this box (you can click my picture to make it bigger):

In true marketing-oriented media fashion, they make it sound like you're deleting something much more than just your phone number, but you're not. They'll send a similar email once you've done this, again, to make it seem like you're now going to be missing out on something. Probably just phone calls about what Harry Potter character you are or what your baby will look like (i.e. nothing).