The NextRoll User Lists Segments Curl Sample Code demonstrates how to access the API to implement user lists segments. Developers receive a summary, total visitors, new visitors, and current visitors as responses.
Personalization tools have long existed allowing marketers to custom tailor online marketing to consumers. However, business to business marketing has eluded personalization tools until Demandbase created its Real-time Identification service: a "service [that] bridges the gap between known and anonymous web visitors by identifying and segmenting the companies visiting a website, and providing detailed, targetable business attributes in real-time." Now, Demandbase is making its Real-time Identification platform available to third party developers via an the Demandbase API.
One of Google's oldest APIs--and the one most closely aligned with how the company makes money--will disable old versions of the Google AdWords API at the end of February. If you're using an app to enable keyword buys, or are using the API directly yourself, you'll want to make sure you're using v201109.
Facebook has added Codeless App Events to the latest version of the Facebook SDK. The new feature allows app owners to track interactions between app users with certain elements within an app (e.g. buttons, images, etc.). Codeless App Events is implemented through a visual tool to reduce coding.