That silly "DE" match really shook my confidence in Ancestry's results. I was really hoping for my very own cute little haplogroup to compare to other haplogroups. I really didn't want to rely on Ancestry trees. I'm sure I have mistakes in mine and a bunch of connections I tag as "SPECULATION" (needs further research) in my notes. Of course, you can't see my notes on Ancestry so the connection is still there, but that's the framework I start researching with.
If I have to go back several generations in a match to find the common ancestor, isn't that what I'm doing by trying to document my family? If both parties in a match knew that common ancestor, we would have that in our tree already. If I had that information already, I wouldn't need AncestryDNA to tell me...well, maybe to confirm it.
But seriously, that connection between Delaware and DE-Federal Republic of Germany? That just shows me that (some of?) the matches are haphazard.
OK, I'll explore some matches, send messages. MAYBE I overreacted.