@sil @adactio fwiw, pingback was extremely valuable prior art for webmention, the first indieweb comment implementation used pingbacks, and some indieweb sites (my own included) support comments using pingback as the notification transport, often using webmention.io as a proxy

@sandeepshetty fab :) I want to get Salmon working so I can reply/fave/etc. from my own software but it’s bloody awkward. Currently in the process of publishing some ideas on how magic sigs could be more effectively used. In the mean time, Pingback FTW!