Wikipedia is a great example of a trade-free service. They offer an online encyclopedia and don’t want anything in return. I don’t have to give money to access Wikipedia, I don’t have to trade my data, attention or anything else, since they have no trackers or ads. Of course they need money to sustain themselves in this trade-based world, but they make this voluntary in the form of donations. So if you can and want to support them, you can do so, if not, then you don’t have to – you will still have access to Wikipedia.

Creo que es el servicio TF más cercano posible y siempre es uno de los principales ejemplos. Es un recurso colaborativo, educativo y confiable utilizado por todo el mundo. No tienen anuncios y también tienen una política sobre NO publicidad. Funcionan con donaciones.