[eozoon]

From my personal experience, podcast is more of a "main stream" thing in US/UK than most other countries. Most people know what it is, and sometime people recommend shows to you in casual conversation the same way they might recommend a tv show or a book.

In HK and Japan, while it is still quite widely used by the relatively more tech inclined people, you can't randomly ask a new friend if they like any podcast and expect them to know what you are talking about.

Also, English is a widely used language. My native language is Cantonese, but the amount of shows in that is very low, and I'm more comfortable with English than other Chinese dialects including Mandarin, so I listen to mostly English podcasts. I imagine similar thing might happen in countries with more than one spoken languages. I know some Indian friend who has a podcast that they did in English even though the topic and target audience are mostly Indians as well.