What is the best auto-surf site?

What is an auto surf site? Can someone enlighten me on this? Thanks

I am currently using easyhits4u. I must say that this is the best that I use. I make up to 150 credits a day working only for 1 hour. They say that they pay 3 cents per 1000 sites visited and 3 cents for every referral who surfs 100 pages. I don't know if they really pay since the theme of the site is traffic exchange. And yeah they always have 600+ members surfing everyday. Keep on myLotting!