No Disputing It: Blogs Are Major Players

Intrigued, Johnson, whose online ID is "The Big Trunk," put a link on his site, PowerLine Blog.com, to Buckhead's post.

Then the floodgates opened.

"Thanks to all the readers who have written regarding this post," Johnson wrote in an early update. "Several have pointed out that the Executive line of IBM typewriters did have proportionally spaced fonts, although no reader has found the font used in the memos to be a familiar one or thought that the IBM Executive was likely to have been used by the National Guard in the early 1970s.

"Reader Monty Walls has also cited the IBM Selectric Composer," he continued. "However, reader Eric Courtney adds this wrinkle: The 'Memo To File' of August 18, 1973, also used specialized typesetting characters not used on typewriters. These include the superscript 'th' in 187th, and consistent ' (right single quote) all parentheses in original used instead of a typewriter's generic (apostrophe). These are the sorts of things that typesetters did manually until the advent of smart correction in things like Microsoft Word."

Soon Charles Johnson, a Los Angeles musician-turned-conservative-blogger who hosts the site LittleGreenFootballs.com, posted the results of his own investigation. He wrote that he had opened Microsoft Word, set the font to Times New Roman and used the program's default settings to retype a purported Killian memo from August 1973.

"My Microsoft Word version, typed in 2004, is an exact match for the documents trumpeted by CBS News as 'authentic,' " Johnson wrote, posting images of his creation and the CBS document. (The Times New Roman font itself predates computers; it was designed in 1932.)

Within 90 minutes of that post, the Power Line site was linked to perhaps the best-known conservative site of all -- the Drudge Report, made famous when Matt Drudge took a lead role in the first reports on the relationship between then-President Clinton and Monica Lewinsky.

"That was a quantum jump in awareness," said Scott Johnson. "It was wildly circulating in the blogosphere until Drudge linked us. Then it was instantly known to a million people, and it was all of a sudden a legitimate story."

Suddenly, the story line shifted from the question Democrats had been trying to ask -- whether Bush received special treatment in the Guard -- to whether a network long detested by conservatives had been duped in its quest to air a report critical of the president in the midst of the reelection campaign.