We have a large team of expert engineers and analysts devoted to it. By far, most invalid clicks are caught by our automatic filters and discarded before they reach an advertiser's bill.
We have said for some time that we believe we manage the problem of invalid clicks very well.
This agreement covers all advertisers who claim to have been charged but not reimbursed for invalid clicks dating from 2002 when we launched our 'cost per click' advertising program through the date the settlement is approved by the judge.