For me the first measure of content for .mobi sites is not the uniqueness but the mobile accessibility. That in itself proves to be unique in its own way. As for the data feeds the public doesn't understand that stuff. They care about presentation, accessibility, usability, branding, etc. I'm all for unique content, don't get me wrong. But often times sites fail to take care of the basics, often providing too much content for mobile users. For example, for a hotel listing, at first I want the basics. Name, location, phone number and maybe a star rating. I don't want lots of photos, user reviews, latitude and longitude, driving directions, etc at first, maybe a click down under more info. This info is all out there on thousands of website today but who is making it accessible to mobile users in a way these users want to interact with it? This I feel is the challenge and opportunity for .mobi sites today: Get existing content out there in a way that is mobile friendly. Increasingly we are seeing that the users are out there wanting and waiting for this to happen.