Yup. My gf teaches genetics & microbiology at univ. and a few years ago we both had our DNA done when 23andMe had a sale. The results were interesting but not earthshaking. Until a few months ago I'd get the occas. notice that someone is related to me but I never followed it up. I suspect that those tests are now more detailed as the technology improves and more exact testing can be done for a reasonable price for us consumers.DNA is an evolving science. It depends on recording test results from increasing numbers of people to get increasingly accurate.....
Now finding my biological parents' story 20+ years ago was more interesting. (I was adopted.) As it turned out my biological father's parents - my paternal grandparents - were born during the Civil War (1862 & 1863) in a tiny hamlet in south-central KY. My father was the last of 10 children, born in 1904. A few years later they upped sticks and moved to Saskatchewan to farm. I have a poor-quality B&W photocopy of my grandparents in their 80's, a couple of tough old stringbeans who could have been the inspiration for Grant Woods' famous "American Gothic" painting!
Every once in a while I go looking at Civil War records to see what side HIS grandfather fought on. Nothing conclusive but it might have been on the Confederate side. I know that one great-great (?) uncle had a slave, to whom he granted her freedom in his will, around 1838.
Haven't done much on my adoptive parents' side, although I have discovered that my surname (in its original Norman form) appears in the Domesday Book!