Google entirely makes money on curation :), that is what they do. Curate and organize the web. They also sub in their own product links everywhere. The creator

Google entirely makes money on curation :), that is what they do. Curate and organize the web. They also sub in their own product links everywhere. The creator of this project threw in some referral links, but he didn't replace them. And maybe he made $20 to $50 bucks for what was a huge chunk of his time to create this fun data analysis project. Seems a weird thing to complain about.