Quantity and rate of posting probably don't signify all that much - someone could either be very knowledgable and have lots of good advice, or they might just not have anything better to do

.
Me? I'm not suggesting anything....No, I don't think 16 posts per day is a lot. A single thread might run on interminably simply because of the need to isolate just what the problem is becomes so involved it turns into a case of "debugging by remote control"; that can really bloat post rates.
The varying titles would be more useful if they could reflect the credibility and understanding of the member - that would probably require some sort of rating system - either "rate this post" or "rate this member" (sorry, self-rating and multiple votes are not allowed

). But for that to yield signficant results, then significant numbers of votes have to be collected. Does anyone actually rate threads at present?