On 2018-11-09 18:12, Nico Williams wrote: .... > The IETF could, of course, just provide accounts in an > ietf-participants.org domain. I could understand if it was reluctant to > do so perhaps even with a separate domain for participants. Isn't that effectively what we do, with the meetecho chat window, which requires a meeting registration number? I wonder whether meetecho-lite, with restricted features, would be an option. Brian