Internet radio shows and podcasts can be a great place to promote your books. These interviews are conducted just like traditional radio shows, though a big advantage is that authors typically get far more air time than traditional radio. Where a traditional talk radio program might give you a 10-minute interview, many internet radio programs will feature you for 3o minutes up to a full hour.
Another advantage of Internet radio programs is that the recordings are usually archived online so that you can continue to get exposure from listeners for a long, long time. Many post their programs to directories like iTunes for even greater exposure.
Because of the diversity of the Internet, there are radio shows for virtually every topic you can imagine. From working moms and psychic healing to marketing and selling on eBay, there are shows available that should meet the needs of every author.
To locate internet radio shows on your subject, start with a Google search on your subject matter keywords plus “radio show,” “radio” or "podcast." You might be surprised by the results you find! Here are some additional resources that host shows ranging from business and health to family matters and religion:
http://www.wsradio.com/
http://alltalkradio.net
Keep in mind that these programs NEED guests! Most show websites will list instructions for contacting them. If not, you can always send a concise e-mail pitch to the show producer or host.