U.S. a third world country?

Wow. Throughout my life as a student, I've always heard other foreign countries referred to as 3rd world...Is America one of them? Check out the link below...

http://shiitushouldkno.blogspot.com/2010/08/10-signs-that-us-is-becoming-third.html

Never expected to hear the United States and 3rd world country in one sentence...