DPotts, you are right, but wouldn't a DNA match not see your tree and think it is private? BTW, I don't see a public tree for you either.
sarahjune53 & MJ782, since I don't see a tree I think it is private. Do you think it is something you clicked when you set up your account? Or maybe something to do with "Member Connect"
I was wondering if you have a different ID for your trees and a different one when you post to the forums, maybe?