 to better train our algorithms. And also, we've taken action to change our ranking algorithms to emphasize authoritative sources in your results. One of the ways that we've done that and one of the ways that we're better training our algorithms is through our search radar guidelines. These guidelines are used by trained individuals, there are tens of thousands of them around the world, who I was explaining earlier, review our search results, so not specific findings, but they look at types of results,