[notphilatall]

I've noticed a pervasive attitude throughout the SF social app community that your app is at a disadvantage if it doesn't use all of the (potentially dirty) tricks that other apps use -- especially in a crowded space. If your app is the only one that doesn't do automatic friend discovery, or post to the Facebook news feed, your growth coefficient is going to suffer. Of course if you're the first to be found out doing these tricks, the backlash can hurt more than it helps. It's a gamble, and although the HN community is (rightly) in uproar, Joe average user likely won't care that his address book was uploaded unless he's explicitly told to be upset about it, or unless someone compromises Path's servers and he's personally hurt by it.