Websites ranked number one received an average click-through rate (CTR) of 36.4 percent; number two had a CTR of 12.5 percent; and number three had a CTR of 9.5 percent. Being number one in Google is the equivalent of all the traffic going to the sites appearing in the second through fifth positions.

Here's a look at CTRs on the top 20 sites:

Basically, Optify concludes that moving up to the top spot in Google from second or third could triple visits to your website.

Optify's study of U.S. Google search engine results pages, conducted in December 2010, analyzed organic keyword visits for B2B and B2C websites. Optify analyzed data from 250 randomly chosen sites and an initial set of 10,000 keywords.