P.S. did wetsuit play this one, I'm sure it began with UID 5 on the sheet and that seems quite low for it to be another user.
wetsuit's UID is 4. Check the ref link in his signature!
I made a scatter graph of the tickets but it doesn't give so much.
I'm not sure how to get the best out of it but UIDs close together with similar numbers of tickets (looks around 25k) is what to look for.
there's ~30K of such accounts starting at UID 15055000 and ending around 152383xx