> global message id / global channel
Yeah, I don't have global ids. every message is bound to the channel it was published to. But I do understand that for your use case, (user + arbitrary list of groups), you'd need a good deal more than 4 channel multiplexing. It's a pretty strong use case and I'll see what I can do in the next month.
Of course, I can be incentivized to work faster with a generous donation :)
> Regarding web sockets [...]
All the cool kids were talking about it, so I thought I might as well support them, too.