Are you familiar with ChaCha, the question answering service available via cell phone?
So far, so good. There has been several rounds of testing, and I still haven’t heard back from the last (a human grades your trial efforts, may take a couple days). Seems like they are very concerned about the quality of the service provided, even though many of the questions coming in (judging by the popular keywords) are more fluff than fact–I don’t think “Angelina Jolie” is a subject anyone is getting tested on in school!