Count me in as one who has not only learned a lot from Sean's prolific posting on this site, but have also been the recipient of some of his handy work.
As you'll see in my "virtual system", I have a pair of cables that Sean made for me. They are his own unique version of the Belden cables. At the time that he made them for me, my system was much "higher-end" than it is now and I compared his cables to a pair of Audioquest Emerald X3s that I also owned. To these ears, it was too close to justify the additional expense of the Audioquests.
Sean made the cables for me, burned them in on his cooker and shipped them to me and only charged me his cost of materials. In addition, I had a pair of cables drop-shipped to Sean. He assembled them for me so that I could save a few $$$s and also broke them in on his cable cooker.
All of the assistance that he prvided was unsolicited and uncompensated. We're not "email buddies" either. He's just a very kind and very patient man with a big heart and a passion for this hobby.
Finally, I'd like to give special recognition to Albert Porter whom I also don't know from Adam. His knowledge and passion are unparalleled. And, similar to Sean, he is very kind and generous. He contacted me privately one time with an offer to act as a broker for an item that I was considering purchasing and would have saved me a good deal of money. I ended up going another route, but the fact that he made his resources available to a perfect stranger speaks volumes.
I guess that's the theme here. From what I can tell, Albert and Sean are on opposite ends of the socio-economic spectrum (no offense, Sean), yet they both do what they can to offer their resources and expertise in any way they can. That's passion. That's conviction. That's being a good steward and a good neighbor in this little community we call AudiogoN.