Apple, via Medallia, is sending out customer satisfaction surveys:
Thank you for your purchase of the Apple iPhone 3G. We would like to ask you a few questions about your experience with your new phone. [...] The information you provide will be used to improve our product support. We will not use your responses to sell you products or services.
Questions include where you've gone for iPhone help (cheat sheet: TiPb!), whether you've returned your handset to your carrier for repair or replacement, whether you primarily use Windows or Mac, whether you primarily use your iPhone for work or play, whether it's your first Apple product, and general demographic info.