There are podcasts like that, but I admit I am strange because all my favourite podcasts are multiple hours long, getting really deep into the content. Jocos podcasts, which doesn't really have ads other than for his own products, fx are often more than 3 hours, Dan Carlins Hardcore History is typically that long per episode, but often they are also part of a series, like his 5 episodes on the first world war (probably about 20 hours).

Podcasts are following the same pattern as other media. I think it's a vicious cycle. The medium starts out with a few ads, at a higher price. Once the novelty wears off and people are used to seeing these ads, they can't fetch as much money. So the publishers start shoving more and more in, driving up the ad saturation and driving down the value (and income) from each ad.

I've been listening to podcasts since about 2010, and in that time I've witnessed podcasts that used to be ad-free jump on the Blue Apron / Stamps.com / Dollar Shave Club bandwagon. First they started with a little sponsored ad at the end of the show. Then one at the beginning. Then one commercial break. Then multiple commercial breaks. It's the same downward spiral that television went through and it's absolutely painful to watch it happen and be powerless to do anything. Maybe I should have done a better job of supporting those podcasts; I did donate to many of them. But I envision a time in the future where I'll no longer be able to feel good about listening.

If you're on iOS you should try my Podcast client, SkipCast. http://skipcast.net/ The marquee feature and indeed, the app's name, is for this exact reason. Large buttons make skipping much faster and accurate that other players, letting you get to the content you want faster. It's also got Skip Silence to eliminate extended moments of dead-air.

This is why I stopped listening to back to work. There were useful tidbits, but I didn’t want to wade through an hour of random drivel to get to it.