I agree: Ancestry.com DNA has not been a wasteful expense for enthusistic genealogists (as most of us are), but limitations face us as we seek to narrow our research ... while the populations from which autosomal DNA is drawn expand greatly as we reach back in time.

My family's roots lie completely in Colonial America (overwhelmingly in the South), for example, and it is becoming more challenging with each match (for a layperson like myself, anyway) to determine the identity of 'true' common ancestors. Several family lines may be shared with those of distant cousins.

So, an abundance of information is coming our way - and it is ringing true, in many cases - but the lens provided by Ancestry needs to be a clearer one. Even a carefully and deeply researched family tree may be but a hall of mirrors (in itself, via DNA, potentially, cool: we are descendants of the same mistaken ... uncertain, unknown ancestor(s)!).