I guess we know the rules now:
(a machine translation, of course)
"In the first place at each voice it is verified there if the person
with this e-mail address has voted already. Then it is verified there
at each voice if already with this Ip-adres have voted the person.
These verify only?n apply hour. As soon as the complete hour can a
person with a new e-mail address and the same Ip-adres have gone vote.
Studio Brussels and headstock point preserves himself always the right
for georkesteerde action with the aim falsify the poll from the
database to remove."
so... only, once per email address; but a gap of at least an hour for a different email address on the same IP...
