Indeed, one has to expect that public pictures of Palin may be used to draw a time-line on her pregnancy to prove whatever it is someone wants to prove.
Instead, I think the ethical problem here is that the accusations being made are so far out ahead of what the observable evidence supports.
I find it VERY difficult to believe any long time FReeper hasn't seen the Chelsea/Hubble morph. It was posted often, it was posted before Chelsea was an adult, and it wasn't a joke to the people who posted it.
Those people, and the ones who take Ft. Marcy park seriously, aren't worth the time it would take to argue with. They weren't going to be dissuaded, so I never bothered.
Short answer? Yes.
LOL
There IS no "striking adult resemblance" between Chelsea Clinton and Web Hubbell. None. Nada. Zero. Zilch. Not in the shape of the head and face, nor in the facial features. Chelsea Clinton very closely resembles her maternal grandmother.
This is a photo of Dorothy and Hugh Rodham, and their two children (I think they later had another son) circa the early 1950's. Compare the shape of Dorothy's face, and her facial features to Chelsea.
Here is a photo taken sometime within the last 10 years. It shows a now aged Dorothy Rodham with her grandaughter, Chelsea, and her daughter, Hillary:
Shape of their faces -- nearly identical.
Cheekbones -- identical.
Chins and jawlines -- identical, allowing for their different ages.
Noses -- identical.
Eyes, eyebrows, space between the eyes -- all identical, again allowing for their different ages.
Mouth -- all identical, with the same straight upper lip and bowed lower lip.