Tonall is a social network for musicians, but the instruments are the real stars of the show here. Why? Simply because connections on Tonall are made based on which instrument one plays.
If you become a user of Tonall you will be able to review the instrument you play, and wax romantic on its sound, its appearance and all these things that makes your eyes go misty when you think about it. The idea is that others will both get to know you better thanks to such reviews, and (which is every bit as important) get to realize if such an instrument would be a good fit for them.
And as it is only suitable, users of Tonall can buy and sell gear – a marketplace is provided to these purposes. It is browseable (and usable) by any single person who signs up for a Tonall account. That costs nothing, by the way. As long as you can speak English then you can jump aboard.