According to CNN, Mignon Fogarty is a science writer! She has to edit other people's technical documents on a daily basis, and one fateful day she had had enough of bad grammar. Mignon decided to start recording a podcast offering tips on common grammatical mistakes, and it's been an overwhelming success so far. She's currently #47 in the iTunes podcast rankings, and there's a reason why. The Grammar Girl podcasts run about 5 minutes, and they're cute and quirky. It isn't easy to make verb tenses and past participles fun, but Mignon does a great job of it.

Great little podcast shows like this are why I love the Internet. One woman with a microphone and an idea can be heard by thousands of niche fans every week. The barriers to entry are a microphone and a net connection, and those can always be found with the public terminals at your local library.