I was linked to one more pro-incest blog last week(-ish), here:
http://marriage-equality.blogspot.com/2011/11/frequently-asked-question-why-is-incest.html?m=1

While it touched on some of the reasons anti-incest laws seems to persist today, what I found more interesting was another blog it linked to near the end:
http://marriage-equality.blogspot.com/p/discredited-invalid-arguments.html

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America just made it legal for homosexuals to join us married plebs in our misery. Hooray!

But why stop there?

This is not a joke post, I am in fact serious. Relationships of this nature do exist and I do feel they should be recognised. I mean, why not? It's only fair.