Weird Sign up Screen on New Corporate Theme

Hi,

On my new activated corporate theme, this is the message on the sign up screen (see picture#1)...
"Username (required) *(must match your etsy username) if your etsy username are '123' then you should use username '123'"

What is Etsy? Is it the etsy.com that I'm thinking of? Is someone selling on etsy at the time that they are coding? (Joke)

Could this be a mistake?