I had my 90 year old mother tested, myself and my brother, my husband. Not for ethnicity and personally I'm not sure of the point in that, we all come from one area and its about how quickly our tribe arrived where we are, via what route. Anyway, I've had great fun with the results but you need to get your 32 ancestors or near to them as you can (I have brick walls, illegitimate births etc) but it certainly helps if you want to get matches. Forget surnames for the most part, look for locations. If you're UK and getting lots of US matches check onto ancestry worldwide and get their most recent descendent's ancestor to the 1940, 1930, 1910, 1900 census, look for who was born in England, follow that line back to the UK. Check their death certificates in the US, lots of times they give the parents names. Pick them up in the UK and keep going back to you collide with the same ancestor. Got to think outside the box and be creative in your searches.