If you check out chaincast, you can get a list of many of these stations, and listen while you are doing other tasks. Most of them have emails for their forums, and often read emails from listeners.
Nathan's right.
In fact, WRKO Boston reads listerner's mail on the air.
Favorite shows Moe Lauzier (Saturday morning 5-8) www.issuesoftheday.com and Howie Carr (weekdays 3-7).
Howie's show has streaming video so you can listen online.
He's a hoot.
Thank you all for your replies. This may not be the easiest way to reach millions, but reaching hundreds is a good way to reach thousands to reach millions. :)
BTW, the KLBJ forum went from zero to seven guests since I posted a link to their forum.