1. None. There are animals I wouldn't care to eat (e.g. primates), but none of them are on offer where I live.
2, 3, 4: N/A. On (3), though, when I have to avoid things that personally disagree with me, I don't expect a waiter to be able to definitively answer questions about the precise ingredients of a dish. I guess conservatively from the menu description.
5. No, I don't try to persuade anyone to omnivorousness.
6. N/A.
7. I might ask them why. Or not.
8. Brought up as an omnivore.
9. N/A.
10. My metabolism appears to be several standard deviations removed from the norm in several ways, so I pretty much ignore all dietary advice beyond "a little of what you fancy". It works, so I don't fix it. No strong moral attitude.
I have noticed that among philosophers, vegetarianism of one form or another is quite common. In fact, I became a vegetarian (technically a pescetarian) myself partly out of respect for an undergraduate philosophy professor. I am interested in finding out if there is a similar disproportion in the Less Wrong community.
I didn't request that this go into Yvain's survey because I want more information than just what animal products you do or don't eat; I'd also like to see nuances of the reasons behind your diet. There are a lot more shades than carnivore/vegetarian/vegan - if you want to be a vegetarian but are allergic to soy and gluten, that's a compelling reason to diversify protein sources, for instance. I'd also like to hear about if you avoid any plant foods (if you think they're farmed in a way that's environmentally destructive or that hurts people or if you have warm fuzzy feelings for plants, maybe). Here are some questions that come to mind: