Podcasting is only about a year old, but already there are cries that big media is co-opting the grassroots technology.

Podcasts are audio programs downloaded from the Internet to portable digital music players. Most are produced by amateurs, but many broadcasters, from National Public Radio to ESPN, are using the technology to find new customers.

Many people are getting their first taste of podcasting from the new version of Apple's iTunes software. But some podcasters complain that Apple is highlighting big media podcasts, while burying the little guy.

Blogger and podcaster Chris Doelle of Houston says amateurs are the real podcasters, and he's urging listeners to resist big media podcasts.

Dwight Silverman says Doelle's got it wrong.