I think when behind a screen with a username people feel much more comfortable to speak there mind and say what they want to say without a filter. Even when on facebook with real full names people still comment and do things they wouldn't in person. Like comment on peoples photos that they don't even know and saying "your so pretty!!!" I think that all of those nice comments are okay but in person things like that never happen. In the case of youtube and having a screen name no body knows who you are which gives people more confidence and security to say things they want to say which might even be mean and hurtful.

I agree with Dom ^ completely. I think that adding all the extra bits and pieces to the article helped make the article engaging the whole time. But I also agree that it may not work on all computers and that is a down side.