I'm on both of those groups. In the vaccine group they talked a lot about the payment aspect of it at first, a few of months ago. I think they get around $1500. The vast majority are having private antibody tests. There have been a few arguments about it and now they don't allow any posts criticising those who do!
It backs up the reasoning behind the UK's stance on not paying participants. If they are motivated my monetary reward, their commitment to the principles of the trial might be weaker, as evidenced by their unblinding.
The investor group is interesting but I've bought shares so I'm doubly invested! I don't understand a word of it and I'm definitely a small fish in a big pond!
I'm currently waiting for my 15 and 30 minute obs after my first crossover shot. So far so good.
NB: People were asking what the blood pressure threshold was - it's 160 for the top number. Despite my white coat hypertension, I passed - just!