What did they do?
Well, as I said, we believe them not to be a 'they' at all but a 'him'...
Serra mysteriously disappeared for 2 full years during his membership but coinciding exactly with his absence along came white12 who answered in exactly the same way. The day serra returned white12 disappeared... Eventually hondast took over from both of them.
Serra used Search by Image to solve many puzzles, some of which were exceptionally difficult. But he got them all - old cars, modern cars, racing cars, buses, 3-wheelers - you name them, he answered them without a single question. Wham - straight in with the answer. And some of them appeared on the 'Net in only one place and then had only been there for a matter of days, but that didn't stop him going straight there.