I would love Stack Overflow to recommend questions for me to answer, based on questions I have answered in the past (perhaps taking into account how many upvotes my answer received).
I find the tagging system too general for finding questions to answer. For example, questions tagged
ravendb cover a wide range of topics, many of which are out of my comfort zone, but I would probably be inclined to answer a question that is specifically about writing an extension for RavenDB.
I imagine the term vector of a previously answered question could be compared with new questions to yield a set of sensible recommendations.
Just an idea.