can 2 persons share a moneybookers account?

[subandi]

yo.
I know that you can register different email adresses for your MB account and use them both to deposit/withdrawal.
but I also know that some pokersites f.e. dont allow me to deposit into a friends poker account.
so if I add his email adress to my moneybookers, can I then deposit/withdraw for him? or will the pokersite still regret because of me not beeing him?
ty