All blue-eyed people are related!I had a blue-eyed grandfather. That means I'm related to my wife...
It's true! Danish geneticists isolated the "gene" for blue eyes. It was a mutation on the OCA2 gene -- a single "switch" from adenine to guanine. This happened 6,000 to 10,000 years ago, around the northwest end of the Black Sea. Everybody with blue eyes is descended from this single ancestor, and brown-eyed people with a blue-eyed ancestor are also part of the "family."
So how 'bout that, ancestry dot com?
This is old news to people who follow the latest science. I ran across it in an article about Neanderthals in National Geo. A link: http://www.springerlink.com/content/2045q6234h66p744/fulltext.html

