The real point is: Friendfeed is a next-gen, open version of Facebook's social feed.
This is a great test of the difference between my position and Umair's. I admire Umair's thinking a lot. And I've been forced to agree that Facebook's "DNA" is evil in many of the ways that he says.
Nevertheless, I still believe that a private or reliably discreet feed is a valuable service. And one which, by definition, only a closed YASN can supply. I can't imagine BabyRota-like services appearing via FriendFeed. Of course, I haven't seen BabyRota-like services on Facebook yet. But I still believe that they're more likely there than on public feeds.
Umair is right when he thinks about markets (where openness and transparency is a virtue) but, I believe, misses that not all "networks" are markets. I can see FriendFeed being interesting. (My feed) . But is no substitute for what a (potential) Facebook feed could be. ;