As promised, here is the "Q" part of the Less Wrong Video Q&A with Eliezer Yudkowsky.
The Rules
1) One question per comment (to allow voting to carry more information about people's preferences).
2) Try to be as clear and concise as possible. If your question can't be condensed to a few paragraphs, you should probably ask in a separate post. Make sure you have an actual question somewhere in there (you can bold it to make it easier to scan).
3) Eliezer hasn't been subpoenaed. He will simply ignore the questions he doesn't want to answer, even if they somehow received 3^^^3 votes.
4) If you reference certain things that are online in your question, provide a link.
5) This thread will be open to questions and votes for at least 7 days. After that, it is up to Eliezer to decide when the best time to film his answers will be. [Update: Today, November 18, marks the 7th day since this thread was posted. If you haven't already done so, now would be a good time to review the questions and vote for your favorites.]
Suggestions
Don't limit yourself to things that have been mentioned on OB/LW. I expect that this will be the majority of questions, but you shouldn't feel limited to these topics. I've always found that a wide variety of topics makes a Q&A more interesting. If you're uncertain, ask anyway and let the voting sort out the wheat from the chaff.
It's okay to attempt humor (but good luck, it's a tough crowd).
If a discussion breaks out about a question (f.ex. to ask for clarifications) and the original poster decides to modify the question, the top level comment should be updated with the modified question (make it easy to find your question, don't have the latest version buried in a long thread).
Update: Eliezer's video answers to 30 questions from this thread can be found here.
If your second sentence means that an agent who believes in moral realism and has figured out what the true morality is will necessarily want everybody else to share its moral views, well, I'll grant you that this is a common goal amongst humans who are moral realists, but it's not a logical necessity that must apply to all agents. It's obvious that it's possible to be certain that your beliefs are true and not give a crap if other people hold beliefs that are false. That Bob knows that the Earth is ellipsoidal doesn't mean that Bob cares if Jenny believes that the Earth is flat. Likewise, if Bob is a moral realist, he could 'know' that compassion is good and not give a crap if Jenny believes otherwise.
If you sense strange paradoxes looming under the above paragraph, it's because you're starting to understand why (axiomatic) morality cannot be objective.
Tangentially, something like this might be an important point even for moral irrealists. A lot of people (though not here; they tend to be pretty bad rationalists) who profess altruistic moralities express dismay that others don't, in a way that suggests they hold others sharing their morality as a terminal rather than instrumental value; this strikes me as horribly unhealthy.