What are these postcards
In late 2015, we held a referendum.
Thousands of listeners from around the world decided between five contenders for "official flag of Hello Internet".
According to our rules, ballots were sent on the back of postcards.
On this blog we're sharing some of them.
Brady Haran and CGP Grey
(The Jack and Queen of Hello Internet)
PS: See some of the postcards "in the wild" at this link.