I play both EU and US servers, EU mainly cos I have a friend there, she got me into it...but there's one thing I notice about EU players, they're much more polite and dont post stupid **** in the chat box. US players post offensive BS and totally immature, and yeah there are plenty of little kids on there. Jee, last time i know it was a 12+ game, not 12 and under.
So I stick to EU, much better....
I find MoP alot more fun than previous expansions, Im having a blast...but it sucks i can't fly til lvl 90....one more level im there though
funniest because most of the raging over WoW vids on youtube are from euro players.. most famously
language warning.