And relaaaaaaaaaax.
Shit that was scary
Okay, the first one really was blind luck, I was panicking so I went to the memberlist and started clicking around for people with a low post count, Kantis is on page 98 or 99. Then I thought okay, I need to be more systematic or I'm going to miss pages worth of people so I went right back to the start where everyone's post count is one and scrolled forwards - that Bengal person has like 2 posts or something so they came up really quickly.
That didn't work for the next one at all, I guess they had a much higher post count or something, so I started trying to get info out of the avatars and found you can get the user ID out of the image address! Which is how I got the last one

I had my heart in my mouth though cos Goldie had just gotten two and I was like 'shit I bet she found the user ID thing too!'