I don't think I'm on anyone's list... i tried once for a very high wishlist item, but the item was sold and i was never contacted. While I don't blame the person for selling to some-one else, it still really sucks to be expecting something to be yours then finding out it was sold to someone else... i can't even find the gallery of the owner of the cel so i can drool over it.

Such is life though... And I've just decided not to be put on somone's list, much easier to see a cel i'd want get sold elsewhere if I'm not expecting to see it in my gallery.
I have had a few people who know the series I collect, send me emails about things they are selling, and that's really cool ^_^.
I have several cels in my collection that have some interested parties. They each have their own folder called "First dibs on CEL X." I know there have been a couple of times when I've forgotten to message someone, and it makes me feel utterly rotten on the inside.