Well, there seem to be a few all-in-one podcast hosts still standing. I haven't used these sites, I was always more interested in building a podcasting site than actually doing podcasting myself (perhaps that was one of the challenges we faced?).
This is by no means an exhaustive list, but these are the names of sites that have been around for a few years offering free (or low cost) podcast hosting.
And if you want to track the industry, one source you can still turn to is http://www.podcastingnews.com/
I still want to put up a great tutorial on how to podcast with blogger, but I didn't want you to be without links to hosts to evaluate.