Free Directory Assistance

1-800-FREE411

I found this while surfing this morning, and it really is free. Here's some info from their website:

"1-800-FREE411 is free nationwide directory assistance. And it’s free from any phone. Cell. Home. Work. Wherever. Of course, you may get charged minutes on your cell phone (like most calls), but we won’t charge you a penny.

Here’s how we do it. Our sponsors cover the service cost by playing short advertising messages (about 15 seconds) – ads usually based on your search request. Say you’re looking for a local pizza place. We might play you a special offer from Dominos. And we’ll even connect you for free. Of course, you can always just get the original number you requested. Best part is, a typical call to us lasts about the same amount of time as a paid 411 call."

You don't need to sign up for anything, either. All you do is dial 1-800-FREE411 (1-800-373-3411) from any phone instead of your normal directory assistance number.