Urbanowicz Anton Mikhailovich. Imagine aggregator site of international relations. You can exchange the cards and souvenirs with people from different countries. Invite people to visit, ask for a visit yourself. Also there is a service "Exchange of interests" - for collectors, exhibiting exhibition "Coin", choose the category that you would like to change this item, such as "Coins" and wait for offers. Themselves or seek proposals from other members. Monetization - paid part of the site (removal of restrictions on the simultaneous departure of novelties and souvenirs), paid placement of commercial bids in the "Invitation to visit", empowerment, see "Sharing the same interests."