The Push Module provides your app with the ability to send push messages to Android and iOS devices. Beside the functionality to send plain messages to your apps users, all other enabled modules are enriched with push features; that is, other modules may use push messages afterwards for a variety of use cases.
Three months after its initial launch, much-talked-about data portability service Gnip has released version 2.0 of its API, as well as the first glimpse of a business model. As we covered back in March, Gnip's goal is to "connect Data Consumers to Data Publishers in a low-latency, highly-scalable standards-based way." Gnip is a sort of proxy that makes data from diverse Publishers--services like Delicious or Twitter, which create activity content--available in a unified format, and notifies Consumers--like FriendFeed or Plaxo--via a push interface when new data is available. The new version of the API adds full data delivery, XMPP support, and advanced data filtering.
Last month, ProgrammableWeb reported that Metwit was releasing a free, short term trial plan of the Metwit Weather API to help developers who have created applications using Yahoo! Weather APIs and have been impacted by the shut down of the Yahoo! Geocoding API. Metwit has now announced the addition of a brand new feature to the Metwit Weather API: Push Weather Notifications.