2019-04-30 UTC
# 
@coding_earth What we didn't know: Since many years there is an independent, general and open specification for RSVPs on the web: https://indieweb.org/rsvp. It allows people to RSVP to your events just using their social channels. Awesome! E.g. used by https://2019.indieweb.org/berlin @indiewebcamp (twitter.com/_/status/1123137838613245952)