FWIW, there was a research team at Yahoo who would actually get insights about the way people used language (relevant for contextual search) from Yahoo Answers. They were more active during the earlier years when the content quality was much higher. I don't know if they used Vespa in their mining process, but it would not surprise me if they did. Vespa is used in many projects because it's just that good. So if you are thinking of using it -- for Yahoo Answers, for Quora, whatever, go for it. I know a cancer researcher/engineer who wants to use Vespa for serving clinical reports and trial outcomes.
As for the current Answers site, well, we'll see what happens. I know the PM, a delightful person. I don't know the plan. But if there is a plan to make something useful from it, apply. It apparently makes money (otherwise it would have been killed long ago), and that means there's something to work with. When I started at Yahoo I was hoping to get onto the Groups team for the same reason -- a huge challenge to fix something that could be made cool again.
As for the current Answers site, well, we'll see what happens. I know the PM, a delightful person. I don't know the plan. But if there is a plan to make something useful from it, apply. It apparently makes money (otherwise it would have been killed long ago), and that means there's something to work with. When I started at Yahoo I was hoping to get onto the Groups team for the same reason -- a huge challenge to fix something that could be made cool again.