A judge has agreed to the settlement of a click-fraud lawsuit brought against Google, despite complaints that the agreement amounts to a slap on the wrist for the search company. Judge Joe Griffin of Arkansas signed off on the final settlement on Wednesday.

The decision confirms the judge's preliminary approval for a settlement to the class-action brought by, lead plaintiff, Lane's Gifts and Collectibles against Google and other Internet companies.

In the lawsuit, Lane's Gifts alleged being overcharged for online ads due to click fraud, which occurs when someone clicks on a pay-per-click ad with a malicious intent.

For example, a company official may click on competitors' ads to increase their ad spending, or a publisher may click on his Web site's ads to increase his commissions. Estimates about click-fraud incidence vary, with some putting it as high as 20 percent of all clicks.

The February 2005 lawsuit includes other Internet companies like Yahoo and AOL, which haven't settled. Lane's Gifts and the class, excluding a number of plaintiffs who objected to the agreement, settled with Google for US$90 million. A third of that amount will go to pay attorneys' fees and the rest as credits to affected advertisers who can certify click-fraud instances.

"We're pleased Judge Griffin has affirmed the settlement as appropriate and fair to advertisers. We look forward to continuing to manage invalid clicks effectively and provide our advertisers with an outstanding return on their investment," said Nicole Wong, associate general counsel at Google.

The class, which Judge Griffin also certified in his final order, includes buyers of Google online ads between i January 2002, and Wednesday. In the settlement, Google denied the plaintiffs' claims and didn't admit to any wrongdoing or legal liability

In this week's hearing, the judge heard objections from plaintiffs who complained that the settlement amount was too small, that too much money will go to attorneys and that the agreement puts too much of a burden on affected advertisers to prove click fraud.

Joseph Kinney is suing Google and Lane's Gifts in this same Arkansas court to have the now-final settlement dismantled. In his lawsuit, Kinney asked the court to declare Lane's Gifts as not adequately representing the nationwide class of plaintiffs. He also asked for a temporary and permanent injunction blocking the settlement.

As part of the settlement, a New York University computer science expert conducted an independent examination of Google's click-fraud detection methods. The expert, Alexander Tuzhilin, concluded that Google is making a "reasonable" effort to fight click fraud.