Podcasting - Is There a Survey on Podcasting?

Ad tech was the most popular so far. However, keep in mind that's the most recent one. Time series was that before ad tech to ago. What was the one right before ad tech? I believe K means clustering or no,. No, no, we did physically distributed all about working remote. Actually, I don't know anymore. It's all blurring. And nobody wanted to and that's the one that I'm not surprised.