just to add my 2 cents - a couple of weeks ago i got the "invalid clicks" email from G - i had been signed up to 1 manual autosurf and 2 autosurfs and 1 adsense exchange autosurf.. of course i see the error of my wyas and have taken all of them down - but i can tell you that they do work.. i think the issue was that my CTR got too high (mainly from the adsense surfsite) and that triggered the alarm bell - i would think manual autosurf would be fine.. but of course why take the chance - i am now trying to do this the proper way.. checkout adsenseeliteteam.com to see the dark side
I don't want to do anything wrong, not just because it's against TOS , because it's unethical and this whole "Click Fraud" issue sucks. I am putting myself in the advertisers' shoes . Manyal surfing though might bring traffic, not sure of that yet.
it's not a good idea to watch those sites and ban the subscribed sites bc maybe one of ur competition register with ur domain to ban u.......