I think it's a great idea but I would rather it not be anonymously. A lot of people trade pins based on the wants versus trades ratio, I'm not a fan myself, because this is not a quantifiable way to value a pin since the numbers are skewed. As wdwjaun said there are people who are claiming to want/own/trade pins they don't have, no whether this is a simple mistake, perhaps checking off a pin that is not the version you actually have, on purpose to increase the value of a pin you have or because you're trying to help a friend who also wants the pin, for whatever the reason anonymity allows for people to deceive and why really does it need to be a secret? I don't care who knows what pins I have, there listed on pinpics for all to see. Unibear also brought up a good point about multiples, how do we account for that because most of us will buy a second pin to use as a trader when we know it's going to be valuable. While I think this sounds like a great idea, in practicality I'm just not sure how to make it work. Even if pinpics does add this option it won't ever be 100% accurate.