Etsy is a lot about building relationships. I like to get a convo about a Treasury, but don't mind if none is sent, since my activity feed tells me when one of my paintings is in a T. But I always leave a comment on the T, favorite the T if it is awesome, Facebook and Twitter about it if really awesome. After all, my piece is there, so why wouldn't I promote it as broadly as possible among my fans and followers? Might inspire a sale. But mostly, I always go check out the person who created the Treasury. If they have a nice shop, I add a piece or two of theirs to my favorites, to include later in Treasuries that I make. Turn about is fair play. Some of my strongest Etsian friendships have grown from Treasuries.