21 Bikes - The concept here is simple. You upload a photo of you and your bicycle. If they like it, they’ll post it to the site within one of their 21 bike-specific categories. Then, once the picture goes live, it gets voted on and shared by their users. 
21 Bikes - The concept here is simple. You upload a photo of you and your bicycle. If they like it, they’ll post it to the site within one of their 21 bike-specific categories. Then, once the picture goes live, it gets voted on and shared by their users. 
