In early July, Google dropped a subset of Bing’s website from its index. The Bing Discover pages were dropped out of Google’s search results completely, resulting in a lose of millions of pageviews from Google searches for Bing.
The following screenshot is of Google showing no results from Bing Discover for a site:bing.com/discover command.
SEMrush is reporting a significant loss, as you can see by the following chart:
Back in April, an article was written by Roey Skif about how Bing was using Google search to drive a lot of traffic to its own pages. He showed “Bing piggybacks on the low competition of Google’s image search and how to get huge amounts of organic traffic.” It seemed to have only taken a couple months for Google to have enough.
Google’s webmaster guidelines say, “Use the robots.txt file on your web server to manage your crawling budget by preventing crawling of infinite spaces such as search result pages.” According to Google, they do not want search results in its search results. And Bing Discover was just that.
Google said that “this was a change that Google made so we cannot answer on their behalf.” Microsoft didn’t make any changes to Bing Discover that would lead to this change.