Spreaker is a great platform in my view for beginner podcasters and people who don't want to spend money with a free account. If you think about it, 20 hours is a lot of audio to begin with. I also use Mixcloud, which is great for DJ's and now they are trying to work with podcasters. And I also use Ustream as well for my audio podcasts and now I am going to start doing screencasts as well. I am not really ready to do video podcasting yet. I would like to get established in audio broadcasting before switching over to video.