id	domain	url
ajm-1736	www.clustermapping.us	http://www.clustermapping.us/content/clusters-101
ajm-1736	blogs.wsj.com	http://blogs.wsj.com/economics/2010/09/07/what-salary-buys-happiness-in-your-city
ajm-1736	www.census.gov	http://www.census.gov/quickfacts/table/pst040215/0644000,0667000,5363000,1608830,4159000