2Tangos uses what is known as tandem, a learning system that brings two people together who exchange their knowledge on various topics. I teach you French if you teach me how to sow, etc.
2Tango is currently free, with no commissions or payments involved. Ilan Dorot, founder of 2Tango, told Israeli website Newsgeek that the company is not aspiring to charge money for the service or be profitable at this point. 2Tangos started as an idea among friends, he said (Dorot and four others located in Tel Aviv, Dublin and Vienna). One of them needed help learning Chinese and came up with the idea of a barter-based learning system that focuses on geographical locations.