Google's AI Overview (AIO) feature is exerting a substantial influence on website traffic. Meanwhile, the prevalence of AI-generated content on the internet continues to soar. Given this backdrop, industry experts had earlier forewarned that the AIO might deplete the pool of human-original data and, instead, increasingly lean on AI-created information. Now, this anticipated trend is starting to materialize. Recent research has revealed that roughly 10% of the sources referenced in AIO are, in fact, generated by AI.