"Coins that may interest him/her"

Can someone explain how is this number ("Coins that may interest him/her") calculated please?

I have often offered an exchange to a collector who is - according to the above - "interested" in 100-200 or even more of my coins for swap, only to receive a response stating that none of my coins interest him/her.

Verweis : "Dejan"​Can someone explain how is this number ("Coins that may interest him/her") calculated please?
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​I have often offered an exchange to a collector who is - according to the above - "interested" in 100-200 or even more of my coins for swap, only to receive a response stating that none of my coins interest him/her.
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​Having coins that interest the other person doesn't always mean they want to acquire them in a swap right away, they might want to hold onto coins or are just not up for swapping with you. Try to never take "sorry, I'm not interested in swapping" as anything personal.

As for how it's calculated I have no idea, my guess is it's tied to coins they have marked "I want this coin" and it gives all years for that coin as a seperate coin maybe. I've noticed that it says you have around 200+ coins that interest me, but I havn't selected a single coin as "I want this coin" so my guess it's based on coins I already have. It's the algorithm thinking I want those coins, not what I actually want.

(also location is a huge factor right now, people don't really want to be sending to far-off places just to swap coins)

"Try to never take "sorry, I'm not interested in swapping" as anything personal"

Of course not! How could it be anything personal if I don't even know the other person?
Maybe it's really the coin specifics issue for those who are more into it than just the type.
Still - it poses a confusion.

Yes, I thing it is a little bit frustrating, when you send several messages to people that should be interested with your coins, and you get negative respond.
I am trying to stick with people, who have no more than say 2000 coins available for swap. No luck with people who have 20 000 coins for swap - they will rather sell coins than swap.

Most people don't know how to, are to lazy to or don't care to modify their WISHLISTS according to their collection interests.
So you will have people that have the standard setting with I want everything I don't have resulting often in false positive numbers.

My take is that that number only shows the types you have for swap that I don't have. So you may have 500 types I don't have and that's the number it will show. Yet if I only collect FAO coins and you only have 3 FAO for swap, then I may not be that interested in swapping with you. Numista has no way of knowing what my particular interests are, only the list of coins I have and the list of coins I have to offer. @Xavier: good improvement idea - add mind-reading capabilities to Numista ;-)

Verweis : "Limbru" Numista has no way of knowing what my particular interests are, only the list of coins I have and the list of coins I have to offer. @Xavier: good improvement idea - add mind-reading capabilities to Numista ;-)

​Numista has instruments like "My wishes" which can be quite flexibly tuned up according to your interest using filters. Personally I use "What I don't wish" filters. I spent some time to add them, but now can economy much more time when selecting swap partners and coins...