thanks, I think you're right - I've already posted into the main thread on the new functionality to advise Ron about this, will leave it with him for now.

Your UK TV group. Firstly, it looks to me as if Ron's wall against prying eyes is affecting public groups too. Apart from not getting a place to write a message on UK TV (at least I can write a message (visible only to me) on radar), I suspect this is because the group inventor has to post a message before anyone else can. Thus, the message you posted being invisible means effectively the group hasn't been opened.

Hi Charles, ... reminds me of that scene from South Park, when Cartman sneaks across the podium in the nude during a speech, whilst thinking he is invisible.

yes, you're "outed"!

This is an experiment, I'm invisible at the moment, but presumably this message will appear to have come from 'me'.