ESRI released a beta version of its “Make a Map” application that website folks/bloggers can play around and embed on their sites/blogs.
The ESRI prototype application intended to highlight the ArcGIS API for Flex, the great demographic data available from ArcGIS Online, as well as the “Map Sandwich” web map layering technique proposed by the ESRI Mapping Center Team.

Only US datasets are available: Median Household Income, Recent Population Change, Population Density, Median Home Value, Unemployment Rate, Average Household Size, and Median Age.

Here is the map for South Dakota’s unemployment rate:

Create your own map here.