Science Rockstars aims to transcend simple recommendation engines and A/B testing techniques to create personal profiles of pitches that persuade individually. Their Persuasion API allows applications to compile profiles of each customer and what sways them. Then, based on the profile, communication can be altered in real time in ways that best suit the customer and increase the conversion rate. The documentation notes that it can be implemented either on the server or client side (the latter includes a Javasctipt library to facilitate the process).
It's come a long way from the Sears and Roebuck mail order catalog. Yet, the new API might bring wrench and dishwasher company Sears the closest it's been to its origins in decades. Developers can now search the entire product database of Sears and Kmart (the companies merged in 2005).
Shopping isn't necessarily particular for this audience, but have you ever tried to help your parents or non tech-savvy friends try to shop for a computer? SalesClark aims to combine several online shop APIs (such as Amazon and Commission Junction) to build a tool that you can sit your mom down with and help her find a computer.