However, YouTube (or should I say Google?) briefly had a glitch in which the character limit on comments changed from 500 to 200. Google employees cleared up this issue on the forums saying the 200 character limit was not intentional, but this news didn't even reach well-known celebrities on YouTube.
The popular video blogger and best selling author John Green had this to say on his twitter:

YouTube comments on the other hand don't have a specific goal in mind. Sure, it's meant to be used to give the creator of the video feedback, but it sometimes becomes a discussion. In the best (a.k.a. rarest) cases, there will be meaningful discourse about the subject of the video. In the worst cases, there will be religious or political discussion on a cat video.
Dan Brown made this video in response to John Green's tweet, outlining how 200 characters can actually be a good thing.
Dan Brown seems to be saying that limiting comments to 200 characters prevents users from being intimidated by the "immense wall of text" and forces commenters to "get to the point." Are we really at that point where 500 characters is considered too much for people to handle? I'm also very concerned about Dan's opinion that users should "embrace any and all experimentation on YouTube's part to try to make the comment section [better.]"
Dan Brown did bring up the interesting point that limiting the character limit on typed comments would encourage people to make more video responses. While I support this new form of internet discourse, it poses a problem for me for two reasons. (1) Not everyone on the Internet or YouTube has a camera, though it seems like a great majority do. Even though this is not a huge problem, it still leaves out a portion of the Internet population. (2) If all the text comments were changed to video responses, YouTube servers would have trouble handling the increased data flow. I think it's pretty common knowledge that videos take up more space on servers than text.
Of course, a lot of this discussion on whether YouTube should have a 200 character limit or not is moot, since it was not a legitimate change in the system, but rather a glitch. It did spawn a rather interesting debate on how discourse on YouTube should take place.