The Brandwatch Twitter Insights Curl Sample Code demonstrates how to access the API to receive aggregated breakdowns of Twitter metadata. Information comes from emoticons, hashtags, mentioned authors, and stories endpoints.
You may soon be able to "Digg This" from within your applications. The social news site's API (our Digg API profile) has long been able to list stories and other data. Now it's looking to let developers add content programmatically.
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.