iAd may not be cost effective for developers; I'm really interested in learning how the production costs compare to response rates for these ads. I just don't get how they can be competitive with low-effort text and banner ads, if you're measuring responses;
SquareUp looks interesting. I'm looking forward to seeing it in the wild;
The Manifesto for Half-Arsed Software Development: "That is, while the items on the left sound nice in theory, we’re an enterprise company, and there’s no way we’re letting go of the items on the right.". I think you could apply most of this to businesses other than large enterprises, mind...