A quick disclaimer - I hate advertising and I have no sympathy for those in advertising.
That said - it's a legitimate business model to pay based on visits to a site.
I think scripting the hits on the link is a bad idea because no matter how good the cause, tricking someone into believing their advertising is successful and gaining money because of that seems like fraud to me.
I won't bore you with any more of my opinion on the subject if you won't ask me to contribute to the cause