I was going to send something to someone but I don't know if they have it or not already. It made me wish there was a feature on here that works similar to the WL search but in reverse. Instead of looking to see who doesn't have the item(s), this feature will tell you if they already have it. Looking at the WL doesn't help much because it may be something that wouldn't be on that person's WL. This would only work for friends as there may be too many users on site.

Do not support. Sounds too taxing on the servers and the invasion of pixel privacy.
This seems really unnecessary. If you're not sure if they have it, ask them.
No support, if they have it already, they can just sell it for much profit
I think this is idea is rather bad. I tend to collect items in relative secrecy, some en masse which will remain on my WL permanently and I'd rather not have anyone, my friends included know exactly how many of some items I have.
I don't support this either, it just sounds like the servers would die. They do that enough already. If you want to give someone something and aren't sure either ask them or just send it anyway, like said, even if they do have it they can always sell it for profit.
Also, as said, what if they don't want everyone knowing just how many of a certain item they have. I can just imagine a user having multiples of some wearable/minion/etc. and then someone else finds out and happens to want one, so they end up bugging the first user about it either wanting to buy it from them or just begging in general. It's like those people that ask about a pet that's on your account when it's not up for adoption, please no. Those are my main issues with this.

Also, think of users like Eric who would just crash the site because they have almost every item on the site.
Do you secretly want to ruin the lives of people who own a lot private cw's? Imagine all the begging. What is in someone's account is private i don't want people pretty much looking into my account, no matter what their intentions are.
