There should be ads on Debate.org so you can see who wants to take a bite out the policies they are trying to debate. Look at the banner ads and take note, who will be running to Washington to lobby for themselves and who is trying to fund themselves for their own gain. Yes the site deserves to pay the designers and other employees but what are the hidden agendas?
I do not think there should be advertisements on debate.org. the ads would be distracting and would take away from the feeling of community. The purpose of the site is to offer a place where people can give their opinions, read other people's opinions, research topics, and learn. Having advertisements could hinder this process.