They seem very selective - I got an invite from someone and wasted a bunch of time filling in profile info. Eventually they declared that I did not have enough experience to be deemed professional, despite a host of well paid AV jobs over five years for blue chips and major festivals, which I had put in my profile.
Incidentally they never bothered to email me that I had been unsuccessful, or explained what had happened - it was only because the person who had invited me got an email demanding if I was up to scratch or not, that I learned this.
If there was a pub with such an entrance policy, I would not want to try again
