How many is considered popluar, cuz I have one that was SUPER popular for a whole night but I got banned so it died down. It still has like 120+ posts so:
One thread missed it by 1 thread, so I still count it. The other is "Have You Seen the Member?" which can basically be a thread that's a normal thread that goes on for years.
I might try it one day and risk the wps 
