I think this is not an action from BetOnline.ag themselves, but somebody wants to make some money with an affiliate system.
That is why it is going to BetOnline.ac and not BetOnline.ag
Probably BetOnline.ag does not even know about this advertisement.
Nice catch, just someone trying to sell his referral link I guess.
If this is coming from the site itself, they could make a better ANN Thread if they win provided it's their image what we are seeing here, and for a gambling sites that has existed for a very long time, that means they are already big.