In his latest post on Micro Persuasions, Steve Rubel argues that text is king on the Web --- that is, if you don't know how to use it, you fail.
Rubel suggests five principal attributes of the text supremacy: it's scannable, it's search engine optimizing, it's easy to read in a cubicle at work, it's amenable to mobile, and it's easy to distribute.
Rubel says command of the language --- even if in bursts and clips --- is behind the success on the Web. While video is nice, it doesn't have the power, reach and interactivity of text.