Ohai. First evidence I can find from a post on Ye Olde NorthernFurs mailing list is 26th August 2000. Even better, there's an archived meet report: web.archive.org/web/20010412...

Around 10 minutes 'til Scotiacon reg opens. Looks like I'll be on my tod again this year. :/

Finally got an invite code for this here Bluesky thing.