Ads for Google and related companies were found in the top spot in 91% of 25,000 searches related to items, according to a report on WSJ. For example, a search for "phones" would produce ads for Google Pixel, which the company launched last year. From a report: Similar results were found for searches on "Watches" or "smoke detector," which produced ads for Android smartwatches and Nest devices, respectively. In a statement, Google says their marketing programs are "carefully designed" to not impact outside advertisers. "All our bids are excluded from the auction when determining the price paid by other advertisers, and we have strict rules and processes -- set to tougher levels than our customers -- to govern the use of our own ads products." The auction is a process deciding which ads will appear for users when they type in certain search queries. Strategies such as using relevant keywords give advertisers a better shot at their ad appearing on a search results page.