Google Contacts API gives client applications access to a user’s contacts list where the application can create new contacts, update or delete existing ones, or query for contacts that match particular criteria. This tutorial explains how to implement the API in C# and ASP.NET with OAuth 2.0.
Successful Twitter engagement is generally measured with the simple goal of gaining a high follower count, but true engagement doesn’t end with a follow-back—that is just the beginning. What you really need for success on Twitter is an ongoing conversation with like-minded individuals, folks who will provide informed feedback on your tweets, introduce you to their friends on Twitter who share your opinions and help spread your messages. This series of articles on engagement programming will show you how to use Twitter API 1.1 to move from simply following to truly engaging on Twitter.