TweetSharp is a Twitter API library that greatly simplifies the task of adding Twitter to desktop, web, and mobile applications. Users can build simple widgets, or complex application suites using TweetSharp.
Perhaps the biggest surprise in today's Apple announcements is that the voice command feature, widely anticipated since the largest mashup acquisition ever, is keeping the name "Siri." The newest version of Apple's iOS for iPhone and iPad will include the features of the voice command iPhone app that some called the "ultimate mashup."
Perhaps your most important online network of business contacts is now programmable. LinkedIn launched its API (our LinkedIn API profile), which allows developers to access a user's connections and anyone's profile data, in addition to several other features. Though some are saying "finally," it's clearly not too late for LinkedIn, who aims to be the professional networking platform.