Why bookmark when you can Huff-duff? Excellent point. Now, what the heck is a Huff-duff? Actually, "huffduffer" is both a verb and a Web service, a word that's derived from a technology you can use to triangulate the location of radio transmissions from any given point. Huffduffer, the offshoot of "huff-duff," allows you to perform a similar-but-not-really kind of triangulation for online audio files.
Rather than helping you search for new music, podcasts, or sounds, Huffduffer is instead a platform that allows you to add these sounds into an ever-growing list that--surprise--is actually a podcast of its very own. That's a super-long way to describe what Huffduffer does, but I'm a bit apprehensive to suggest that the Web app allows you to build your own podcasts. It does, technically, but it's not as if you suddenly have a centralized service for recording, editing, tagging, and launching a radio show of your very own.
No, Huffduffer merely aggregates files you've already found on the Web into a podcast of your very own. But that's a useful feature for a number of reasons.