Hellotxt, the service that lets you simultaneously update your status and read your friends' status across many services, has now released an API. There is a long list of microblogging and social networking sites that Hellotxt interacts with, ranging from Facebook and LinkedIn to of course Twitter and FriendFeed (see their home page below).
Google I/O announcements include API updates that give developers more features within Chromecast, as well as multi-player gaming opportunities with Google Cast.
The business networking site LinkedIn has now launched a new application platform they call InApps. It's an OpenSocial-based platform that enables third-party developers to create applications that get embedded into LinkedIn user's profiles. While this follows along the model used of Facebook, MySpace and host of other social platforms, it differs in its emphasis on being business centric in nature and, like the service itself, follows a much more controlled and button-downed approach. And like the LinkedIn API that we reported on last year, access is limited based on an approval process.