Google recently launched Google Voice Local Search, a search engine for your phone. Simply dial 1-800-GOOG-411 and search in the following ways (excerpted from Google’s page):

• search for a local business by name or category.
  You can say “Giovanni’s Pizzeria” or just “pizza”.

• get connected to the business, free of charge.
• get the details by SMS if you’re using a mobile phone.
  Just say “text message”.

Oh, it’s FREE. I suggest putting this number in your cell phone and never get the $1 or $2 charge that cell phone companies know you’ll pay.

Say goodbye to toll 411 calls. Most excellent! Read a really good writeup of Google’s new service, and its competition, at TechCrunch.
Google Voice Local Search