You are thinking of tip4commit. Gittip later became Gratipay and then closed (but the fork at Liberapay still exists). Gittip never collected contributions for people who didn't first sign up. Gittip/Gratipay did other reckless things, but that's a separate matter.

Well perhaps this vapourware platform would have an option for you to redirect whatever funds to somewhere else?

(while making it clear on your package page that you were doing so)