On topic with the thread...yes, yes I have. Especially when I'm posting on 'conservative' polls. (As an ACTUAL conservative, I find most so-called conservatives either reactionary, not thinking, or hypocritical...sometimes all three.)
On the legal question above; depends on the state and the relationship. Some states allow marriage between second cousins; others don't. Some consanguinous relationships are illegal in all states and most countries; immediate family members come to mind. Of course, if no one is reporting it or filing charges, it becomes difficult to prove...