podcast stats, amirite?! I don't trust feedburner, libsyn, or blubrry -- but i've been _thinking_ about using keen.io redirects in my rss & itunes feeds so i can collect ip/agent info and analyze that.
i distribute my podcast (well, it's a video show, but still podcasty) via YouTube in part because I can actually get view/retention/source/subcriber stats + use links/annotations + I can also feed it into itunes. I even made a little jekyll repo that helps you make landing page & video/audio feeds: https://github.com/nealrs/Jekyll-YouTube-Show