How do you feel about DNA BREED TESTING?

I would do one for the fun of it, whether it was accurate or not. I've done a bit of reading on one of the companies who do the testing, and they don't identify every breed, so that's one problem. I read the buyers' testimonies, and some of them did seem strange, but that could also be due to recessive traits. I love the idea of genetic testing, and I think it has great potential, once they fine-tune it and figure out how to do it accurately.