Wil Shipley just pulled Delicious Library from the App Store because it apparently violates Amazon’s new product advertising licensing agreement, which states:
(e) You will not, without our express prior written approval requested via this link, use any Product Advertising Content on or in connection with any site or application designed or intended for use with a mobile phone or other handheld device.
Shipley said on Twitter that he has requested approval, and Amazon denied it and said they are not making exceptions right now.