Totally illegible font color, and selecting the text does not help since the highlight color is also very light. Can't read anything except the graph and headings.
The 3 columns are #ababab on #ffffff in Chrome, in other words a 33% difference in brightness. For primary body text of regular or thin width, a lot of readers are uncomfortable below 50%.
np, it's visible on my display just trying to be helpful based on past experience with others and seeing the initial comment. Part of what might actually be happening is that after seeing the header for each of the 3 columns, the eye sight jumps to the links at the bottom of the columns because it is higher contrast than the body text, and then the visual focus can't help but leaking further down into the "Oh ma" footer which also has higher contrast than the column body text, and then for each column the reader has to make a more concentrated effort to go back and focus on what that important content said. Whereas on the IE6 site, the body text of each column is actually higher contrast than its header and link footer rather than lower. So I think they got that annoying feeling you get when you have to reread a page of a book.
Could you apply Creative Commons the letter you wrote at http://www.theie9countdown.com/ie-users-info? I'm sure there are more than a few people out there who'd like to use it.