This is as good a place as any to discuss the results, although this whole thread should probably be moved to the "General Research" topic instead of "Announcements of DNA Projects." My results still aren't posted.
Ancestry's FAQ on DNA is pathetic. They haven't done a good job explaining Y-DNA or mtDNA, and autosomal DNA testing is even more complex.
We only inherit half of each parents' autosomal DNA, so half the genetic information is "lost" each generation. (If you have siblings, more will have been preserved.) After 5-6 generations, it's entirely possible you didn't inherit any detectable DNA from some ancestors. That's one reason the bio-geographical ancestry (BGA) analysis of your autosomal DNA may not seem intuitively correct.
Another has to do with admixture. If your ancestors all lived in the same, small village for generations, your BGA analysis would be straight-forward (and similar to every other village resident). But in populations with high degrees of admixture (e.g. Americans), it's difficult to distinguish between different ethnic backgrounds. Since we have two copies of each chromosomes--one from each parent--the combination of DNA from each can appear very different than either by themselves.