Guilds halls + info on Guildwarsguru

Hi there...
I have a question about the whole Guildhall thingie :-)

Our Guild, Octopus Overlords (Dont ask, long story), is composed of both US and Euro people. So, my question is this - can euros also be a part of the guild hall, even though it was an amercan that started the guild?
And if we win in PVP, the favour goes to americans , right?

About the info on the GuildwarsGuru site, I was looking through it today, and noticed some descrepancies with screenshots and some info..I take it most of the site was made during the beta, and that some stuff has changed??

Thanks...

Happy gaming
/Razgon