Edited sentence: Looking from a life-style point of view, eBay's biggest achievement for the environment might have actually been that buying 'second-hand' carries no negative social stigma anymore.This lead to the application of the concept of 'eBay-principle' where other websites want to remove stigmatized behaviour like in the auction-based ride sharing & car pooling sector as well.Whereas 10-20 years ago peers might have concluded on ones financial situation due to buying second-hand, nowadays on an international level buying second-hand via eBay is considered rather as being smart than stingy or needy