Obama: $15M in 10 Days?

Reader A.M. writes:

Since there were several blogs about Clinton's fundraising on your site last night, here are some numbers that I've been tracking from Obama's site, which has a '# of new donors' ticker. He has added 100,000 new donors to his fundraising machine in the last 10 days! Current ticker: 1,406,448 now. April 14 ticker: 1,309,965 (@8pm PDT) This includes:

~ 35,000 new donors in the last 24 hours
~ 70,000 new donors since the ABC debate

I'd estimate that even more existing donors have donated again (by a factor of 2 or 3?) in the same period... Using conservative estimates, if 250,000 new & existing donors donated in the last 10 days and their average donation was $60ea ... that's $15 million in 10 days (and judging by the 'activity' on DailyKos after the ABC debate, this estimate is likely quite low.) $15m in 10 days. Without as much as lifting a finger? Who cares about Location, location, location?
Delegates, Delegates, Delegates? Fundraising, Fundraising, Fundraising. Ditto.