There is a great discussion happening about the Watson API with one of the heads of the API program at IBM. It would be great to see HN take the lead on this. I think it would be of huge value to the community.
Usually, AMAs on Reddit are done as a form of self-promotion for whatever company/movie/service the author has a vested interest. There's <i>enough</i> of that on HN already.<p>Granted, there are exceptions, such as AMAs where the user has a unique life experience, but those are relatively rare.