I just spent all my flags on answers containing the phrase "one more question". This phrase, especially when the post also contains "thanks", "thank you" or similar appears to be a good heuristic for detecting a non-answer.
Should this be added to the heuristics for detecting a bad answer? Perhaps we could detect this when an answer is posted and give them instructions telling them to ask a new question instead? Are there other phrases that are good heuristics for detecting answers that should be new questions?