The online site TripAdvisor joins the fight against the behemoth that is Google. TripAdvisor follows Expedia who filed a complaint last week. TripAdvisor claims in the European Union filing that Google is using "anti-competitive and unfair practices...that harm the marketplace and consumer welfare."

Both Expedia and TripAdvisor are claiming that Google is using its dominant position in the search market to harm the marketplace. These two are added to the growing list of people who have complained about Google over the past year. The European Commission said, during its November 2010 investigation, it was examining whether Google artificially lowered rankings while boosting its own services.

Last year, Microsoft filed a formal complaint saying that it has "taken to entrench its dominance in the markets for online search and search advertising to the detriment of European consumers." Google has said that they will comply and help any investigation that occurs as a result of the complaint.