Not I, PS. I still remember the look of incredulity on my director's face when I asked "what is Facebook ?" some 20+ years ago. I had genuinely not heard of it at the time, but when I learned what it was I took a decision never to get involved, a decision that I have never regretted. I take the same position with Instagram, SnapChat, TikTok,Twitter and all the other instantiations of so-called "social media" (which I personally regard as anti-social media) with the sole exception of Linkedin where I can at least see some redeeming features. That said, I have been aware of the Facebook BIR group(s) for some time, and fear that with the exponential increase in social media popularity and usage, such groups will rapidly come to dominate the world of BIR discussions