I worked with Imply Labs to develop an algorithm that would translate data, behaviors and trends gathered from an individual's social media into relevant products, services and information. Once the technology is introduced to someone's Facebook, twitter, blog, etc., it analyzes the data, behaviors and trends to discover the implications. Then, based on the back-end system, those products, services and information that have the highest probability of being interesting to the individual being analyzed are recommended.
And that is how social media meets commerce.
The technology was featured in Wired magazine as well as a number of other notable publications for it's natural language processing and text analysis algorithm.