It’s officially a word. It’s podcasting. Here’s the entry in the Oxford English Dictionary release of new words.
podcasting n.
A very new word, for a recent phenomenon, and a great example of how technological change, especially that relating to the Internet and the media, can be a driving force not only in generating new words, but in determining whether they survive and succeed. In this case the rapid adoption of podcasting (the technology) as a means of making audio material available has seen podcasting (the word) move quickly from its first tentative steps in 2004, as only one of a number of suggested names for the process, to near-ubiquity in 2008. The current OED quarterly release also includes other members of the same family: podcast as a noun and a verb, podcaster, and even the somewhat ungainly adjective podcasted.
Via Podcasting News.
How long did that take? Have you been podcasted yet?