Thanks for your feedback everyone!We really appreciate hearing how you use Q&A and how you'd like to see it improved.
I do go back at times and ask if people have had their question solved or if they're looking for more help. An automatic way to ask the person this after a certain number of days would be a great feature to have, I agree. Our system does notify people when they get a new answer, and suggests to them to mark an answer helpful.
Even though I don't comment on many of the questions, I do read nearly every question and answer that comes into Q&A. I flag questions that have no answers or questionable answers for another Associate to come and review, I give lots of thumbs up (and an occasional thumb down), and endorse good answers (and need to do that more).
One factor in some of this is that if a person came in on a free trial, asked a few questions and took time to implement them, by the time they figured out if their problem was solved or they needed more help their free trail has expired and they can no longer comment on Q&A questions. When I have extra time, I start looking through questions that are still marked as unanswered that are either 7 or 30 days old, and follow up to see if there is an answer to the question and the OP just didn't mark answered, ask if followup is needed, etc.
Please do continue to give your suggestions here, both for the software system and for the administration. We are looking even if we don't comment, and really do find the feedback helpful.