I have to say, however, that over at the Conspiracy Science blog, this post provides a much longer and more thorough explanation of why arguing via YouTube videos is (1) mostly fruitless, and (2) so beloved of people who don't really have a good argument. Read it! Although it relates to conspiracy theories and not atheism in particular, they face a lot of the same issues. A couple of excerpts to get you over there:
Because there’s no difference in a conspiracy theorist’s eyes between any two sources based upon the nature of those sources, they have no way of telling whether a source is true or false. David McCullough, a respected academic historian with decades of credentials, is no more reliable a source than David Icke, an ex-football player who believes that the world is controlled by reptilian shape-shifting aliens. John Maynard Keynes, one of the most influential economists in recent history, is no more credible than bloviating radio talkshow host Alex Jones on matters of economics. This is why conspiracy theorists generally interpret any questioning of the credibility of their sources as an “ad hominem” attack, because to them credibility is irrelevant. Taken to an extreme, this idea results in the bizarre belief that a YouTube video can be just as true and credible as a peer-reviewed scientific paper published in a nationally-respected journal.
Conspiracy theorists hate experts and intellectuals mainly because they are forced to. Few if any real experts in anything—engineering, economics, metallurgy, political science, or history—agree with conspiracy theories, and conspiracy theorists know that this is a major obstacle in their attempts to gain mainstream acceptance. Honestly, if one structural engineer with questionable credentials says that the World Trade Center towers were dynamited and 99 real structural engineers say that theory is bullshit, which side are most people going to believe? Consequently, conspiracy theorists have to tear down experts. They do this mainly by denigrating the real value or relevance of expert opinion, which usually means casting aspersions on expert status in the first place. This has two effects: first, they think it blunts the attacks of experts on their theories, and second, it elevates non-expert opinion into the same realm as expert knowledge.
Also, in the interest of not having a double standard, I want to say something else.
(Pausing to look sternly at the Atheist Experience audience.)
I hope you guys don't argue that way.
Something I prefer not to see is using a clip from TAE as an authority. We're not one. Thus, if you're in an argument and you say "You're wrong! Here, watch this video!" ... You're doing it wrong. You know they won't watch the video, and if they do, they will dismiss it as quickly as possible.
It's the arguments in the video that are meant to help you, and they don't carry any additional weight just because some slobs with a few bucks to blow on producer licenses said them in front of an audience. If you thought the arguments were good, do yourself a favor and learn to use them. The effort of typing in your own version of the Euthyphro dilemma or the argument from evil or whatever, will serve you much better in the long run than proving you can paste a URL into a window.