The number in the middle of the white circle shows the median rent in 2008 and the number outside the circle shows the median rent in 2011. It's safe to say that number is even higher now.
The shading of the state shows the median price to buy a home.
You can use this calculator from ForeclosureDeals to figure out whether you should buy or rent in your area.
Here's the full map from ForeclosureDeals:
You can use this code to embed it on your site:
<p><center><a href="http://www.foreclosuredeals.com/wp/2011-rent-vs-buy-infographic-choose-the-best-real-estate-investment/"><img src="http://www.foreclosuredeals.com/images/rent-vs-buy.jpg" alt="Rent vs Buy Info Graphic 2011: Choose the Best Real Estate Investment" /></a></center></p>