For some, DNA is all about their ethnicity. For me, it is all about finding actual cousins. I'm not just looking for that 7 cM of common DNA but for much longer pieces -- my cousins.
Recently, I discovered that a little work on my part could improve my results on AncestryDNA. I found if I quit ignoring those green leaves (called 'shaky leaves' by some) and actually worked to confirm the hints, the number of 'shared matches' [shared ancestor hints] would increase.
When I posted about this on the 11th, my DNA circles hadn't really changed. However, I now have 16 circles when I had only been seeing about six.