This sounds utterly retarded.
Which is more important to me - an email from ISP or phone company telling me I have a bill to pay, or an IM from a friend asking how my vacation was? Some of the most important emails I've ever received have been from people I wasn't previously acquainted with.
It's as if Facebook are trying to train people to spend all there time interacting with other Facebook members, doing Facebook-type activities. Everything else be damned.