Some knowledge of caramel cards and my two passions, the T207 and M116 sets. I've learned a great deal from my years on this board, everything from spotting altered and fake cards to education on sets I knew very little about previously like the pre-1900 cards.
I like to think that I also bring friendship and have greatly appreciated all the many collectors I have known, both those I met in person and those I know only from cyberspace but have formed friendships with. I also have learned to appreciate constructive criticism and on the flip side, have learned to tune out the smart-asses who are few in number.
