You could actually make a quick macro bot that does this for you.
Well a bot would be kinda cheating, i dont want people to cheat, nor the ad network, because that might get the faucet owner banned, and we dont want that. We want real legitimate people watching ads, and also, if interested, they can buy the products/services advertised.
What are those networks? The only ad network that I know of that pays in Bitcoin is CoinURL. The other large network is Google AdSense which a lot of faucets use. They pay out in USD.
Bitcoin Ad networks: A-ads, Bitmedia, Coinurl, Bee-ads,Adbit etc...
$$$ Ad networks: Adsense, Buysellads, Media.net,Adblade etc
Believe it or not i saw many ad networks ads on Bitcoin faucets other than Adsense. Obviosuly a succesful faucet has to have more ad networks, because Adsense pays only /click. Some networks are fixed, some pay per impression, some are hybrid, etc there are all kinds of ad networks out there...