Lawsuit Against Google

It's not easy to be popular and maintain the status. One will be under watch all the time. Someone is always trying to find the weak spot and attack.

Speaking of such, recently Google was again in the news. "Click Defence", wanted to withdraw as lead plaintiff in the lawsuit it had filed against Google. However, AIT(Advance Internet Technology) stepped up to lead in the lawsuit against Google.
They were saying that the ads by google is not fair to the advertisers, since many users click on the ads that has nothing to do with the business, and as a result can cost a lot to the advertisers. I m sure the advertisers are also aware of such possible unwanted clicks.
So why not the advertisers complaining about it? May be they are not getting as much unwanted clicks.