Recently there was a discussion on twitter about the usage of joind.in at conferences and meetups (Started with https://twitter.com/driesvints/status/966666406438801408 and raised the question this discussion is based upon here: https://twitter.com/matthewtrask/status/966714836318064640)

So what could be done in general to make giving feedback easier and worthwile for attendees of conferences and meetups. And what can the joind.in project do help reach these goals.