ChaCha is rolling out a Facebook application allows users open access to questions and answers from both ChaCha and all of their friends. With ChaCha’s Facebook App, when individuals pose a question to any friends within their social network, the question is also automatically submitted to ChaCha. ChaCha returns an answer from its database of hundreds of millions of answers. Users can also select “add to profile” to get a permanent “Ask ChaCha” prompt on their profile pages. ChaCha alos rolled out an API, allowing developers to tap into the startup’s database with of questions and answers. ChaCha offers developers three variations of its API’s: Quick ChaCha Answer (query the API with a specific question, get an answer instantly); Top ChaCha Answers (query the API with a general topic or keyword(s) and get a list of the most popular answers); and ChaCha Trends (query the API to find out what the world is asking about).
More info: ChaCha Facebook app