Klout SDKs and Wrappers make up a set of development kits that developers can use to develop 3rd party applications. The SDK supports a variety of languages (Java, Node.js, Objective-C, PHP, Python, & Ruby), allowing developers the ability to choose the compatible language and framework. The site also provides developers with other OAuth and KloutPass Tools that are contributed by the Klout developer community.
Quick: Name that professional network with more than 50 million members. Did you guess... Viadeo? LinkedIn is larger, with over 175 million members. But Viadeo has upped it is game with its acquisition of Pealk, which bills itself as the #1 head hunting App on the web. According to the press release, that search ability is what Viadeo is after.