The Washington Post reports that some three million donors made a total of 6.5 million online donations to the campaign. The average online donation was $80, and the average donor gave more than once.

“You looked at the money being raised online in the same way that you looked at the crowds who came to the rallies,” Joe Rospars, the director of Obama’s new media department, told the Post. “You were constantly surprised at the number of people who were coming out to see him, [and when it came to online donations] people exceeded our expectations as to what they were willing to do.”

Astonishing. Seems a comprehensive online presence–one that spans microblogs, social networks and video sites–really does have its benefits, when it comes to political campaigns…important ones, anyway.