Think about it this way.
With autosurfs, you're mindlessly clicking or leaving the computer on, loading the other websites on the network. Do you actually pay attention to the websites rotating in your browser, let alone click on their ads, or buy their products? Do you return to those websites?
What you get in exchange is that your site is shown to other users on the network in the same way. Sure, it'll look good on your statistics, but you'll get very little ad or sale conversion, or repeat visitors from the traffic.
I concur, don't waste your time on autosurfs. :imho: