I don't know - maybe they're enjoying themselves elsewhere?
I buy on ebay - never once visited their forum, same on Amazon. I buy stuff from Tesco and Asda - don't need to use their forums as a buyer, because they don't have one. They may well have a message board system for their sellers, but it would be of little interest to buyers.
I'm sorry Tom, you've lost me with this - you keep bringing everything back to being the fault of the sellers, whatever the everything is. You seem to have had a couple of poor experiences, which is a great shame. I hope that from what you've read on here, you'll see that the majority of sellers are not underhand and nasty , and that we do actually try our best for our clients.
Could we maybe just leave it at that, as none of us sellers can tell you why there aren't more buyers.
How about asking us a question we might have a chance of answering?