Iirc okcupid would let you login with one click via email via a token. I'm fairly sure they stopped doing this a while ago. A much better solution, with a bette

Iirc okcupid would let you login with one click via email via a token. I'm fairly sure they stopped doing this a while ago. A much better solution, with a better experience as well. Neither way is ideal, but making it easier to login probably helps viral growth.