Gratipay

 Gratipay  (formerly Gittip) was a payment silo that allowed individuals and organizations to receive tips to their Gratipay account which was associated with a number of different silo accounts such as Github, Bitbucket, Twitter, and shut down 2017-12-29.

History

 * 2017-12-29 Gratipay shut down: https://gratipay.news/the-end-cbfba8f50981
 * 2015-05-07 Gratipay posted on Medium: https://medium.com/gratipay-blog/gratipocalypse-42fd0ec0d9e8 explaining that due to switching payment processors and attempting to better comply with financial regulations, they would be skipping their weekly payment cycle.
 * 2014-06-07 requested  "website" profile field with rel-me support: https://github.com/gratipay/gratipay.com/issues/2477