I am not sure how reliable the Washington Post is as I don't normally read it. However watching Larry King Live tonight I noticed that there was talking point by a McCain supporter referencing an article by Matthew Mosk and Sarah Cohen where they lay out that:

"Lost in the attention given to Obama's Internet surge is that only a quarter of the $600 million he has raised has come from donors who made contributions of $200 or less, according to a review of his FEC reports."

However, in an article dated October 5th 2008 Matthew Mosk had some different numbers...

"At the heart of the RNC complaint is a federal fundraising rule that lets campaigns accept donations under $200 without itemizing the names and addresses of the donors on its campaign finance reports. The rule was intended as a matter of practicality -- it did not seem reasonable to ask a campaign to gather that information from every five-dollar donor.

But the Obama campaign has raised more than $200 million this way, a staggering sum for donations that will not be subjected to outside scrutiny."

So if the Obama campaign has raised $200 million from small donors, how is that 1/4 of $600 million?