I don't know if it's normal or not, however I feel like my eyes are not used anymore to reading black on white. I can barely read what is written on your blog post without my eyes to blur or to loose concentration. Good thing I read it when you posted it (I mean before you bumped with the video) .
The video is neat, no blur to shift between sound and image.
I remember watching a video about how the guy of 'irongeek.com' do his conference videos. (It's not really on the same subject but at least it can be useful for someone). Here is the link: http://www.archive.org/download/Outerz0n...rz0ne2.avi