Any scripts to help prevent click fraud?

I know I saw some about a year a go but I can't seem to find the URLs anymore.

Basically I am looking for a script that would display the ads, but after the user clicks once or twice they would disappear for a day or two, to prevent any possible invalid clicks(either from members overzealously clicking just to help the site, or from people maliciously clicking to get the account banned). Can anyone point me to such a script if it exists?

 

Wow. I never heard of this but I can see where it would help. I had a problem like that before and this would prevent this if there is one.

 

try looking for a script one that doesn't disappear but keeps a tracks of how many clicks from each ip or person. I have heard of scripts like that but haven't seen one yet.

 

that's really unique script. never heard of it before

 

i dont think any script will do so, becuase when i user clicks the ads no one except google will know his/her ip. so only google can make ads disappear after 2 clicks, but this will ruin page impression..

 

...The server also log' the visitor's IP and it is possible to tell what a user clicks.