How is Google driving customers to stores?

http://adwords.blogspot.com/2011/04/think-with-google-search-ads-affect.html

1. Influence customers who do online research for products and services.
2. Google researched and found positive ROAS and increased sales lift when advertisers targeted test markets online.
3. Stores that may have slow sales compared to various other branded location have seen above 5% lift in sales.
4. One national retailer drove online coupons and saw a 1.6% lift in sales.

Check out the Google Team Video.