I have gotten caught up in a few of the PBS "Finding your Roots" program. In it they appear to use a DNA analysis tool that is from ancestry.com to determine the regions of the world when a persons ancestry originated. I checked it out and it costs $99. They send you a kit and you return a swab sample which they test and return results in a few weeks. You get a pretty cool world map showing the locations and relative percentages of you ancestors origins. You apparently also get a list of any relatives who might be related to you, even though they might be third or fourth cousins. They of course have to be in their DNA database. And they say it is secure and private. http://dna.ancestry.com/
Anyone done this or considered it? My family lines are well traced on one side, but mostly a mystery on the other. I don't know that I'm interested in finding remote relatives, but it would be interested to find the countries or regions in my heritage, though I'm not so sure it's worth $99.