While I 100% understand and agree with
Randy's reason for restricting trades to Coupon Connection, I just don't like Coupon Connection, and probably won't ever use it. I used to, years ago, before it became so "gimmee, gimmee".
My new alternative method for giving away upgrades, is to go into the club at the airport, and ask which long flights have available upgrade seats. I then determine the gate from which they depart, and walk out to the gate and pick a likely suspect. It really is a kick. Actually more fun than giving away an upgrade to a Coupon Connection stranger.
Works for me.