Facebook: Rough Transition?

As a seasoned Facebook veteran, I have to admit that it's been interesting to see the transition that Facebook (http://facebook.com) has been taking as it moves from a closed-network community to one that has a much broader appeal. One of the funny things I've noticed is that much of the site still bear remants of its college-network roots. You'll find forms for room number in your contacts (last time I checked, we hadn't numbered each of the rooms of our house...) and there's still very limited cross-network connectivity.

One of the the things that strikes me as most egregiously forgotten is offering users a ways to provide selective permissions (or restrictions) to groups of friends. Facebook seems to be moving in that direction by allowing you to group your friends, but I have yet to find how I'm able to translate that into and effective data privacy filter. I'm not saying it isn't a difficult undertaking, but I also feel that without implement more options for users, they're going to lose their ability to keep people who have multiple networks of friends, co-workers and acquaintances - all of who don't really have a need to know EVERYTHING about them...