I've known about Agon for years but didn't know it had a forum. The only reason I found out it had a forum was kind of by accident. I created an account to buy a Perreaux amp and was frustrated by a glitch in the bid/buy it now system that screwed up the sale. It was so exasperating that I logged on and looked for a website to vent my frustration - I bought a PMF 3350 under the "buy it now" for $500 but the stupid interface was saying I "won it" for $1. Obviously, the seller (very nice Agon user btw) wasn't going to sell it for that amount so the sale was stuck in limbo. In the process of "venting" I wound up posting on Agon's forum and didn't even realize it was their site until afterwards - how clueless is that? Fortunately for me, Agon staff and the seller were very helpful in getting the item relisted and I promptly bought it again - this time successfully. If that didn't happen, I never would have known about this forum. So if you're a believer in fate or happenstance - there's your example.
Additionally, this all happened right around the time a number of forums and trade magazines were talking about MQA. None of this was planned. While I can understand and appreciate why people in general are skeptical of new accounts on forums, sometimes multiple concurrent events conspire to produce situations that might at first glance appear to be suspicious. That's life. The song "Roll the Bones" comes to mind.....