Project Euler Forum

It seems that BerkeleyMath(it is currently top 2 in the eulerians category) is an account that is made by several people. Is it ok if I make an account in which I solve problems with my friends, if so what is the procedure - do I have to state it somewhere or something else?

Thanks in advance!

Put a hint in your Extra info like Berkeleymath have done.
(How many Berkeley Math Grad students does it take to solve a Project Euler problem?)