An interesting campaign has started to get companies to pull their advertising from the Rush Limbaugh show because of his remarks about law student Sandra Fluke. It is a twitter campaign to get companies to not advertise on Rush Limbaugh's show. You can find a bit more at "Twitter handles of advertisers still on Limbaugh's radio show; 13 now dropped".
There is a small problem that can be overcome. Many advertisers don't specify placement because their costs are less. However, they can also request that ads not be placed on certain shows.
If you have time, and you'll need it, you'll find many interesting views in the comments following the above article.
Darn, TurboTax is in the list. TurboTax didn't send me a free CD this year and I haven't ordered it yet. Should I choose another program or use one I know? Dither, dither:(
BTW, I'm sure somebody's dreamed this up, but Rush is in where angels fear to tread.