Back in August, I posted the explanation of how Glenn Beck's Whitestock crowd numbers were calculated. The company that came up with the numbers were very reputable:
AirPhotosLive.com calculated that about 87,000 people (give or take 9,000) attended Glenn Blech’s SPFathon, Whitestock. [...]
Curt Westergard is the president of AirPhotosLive, the group that came up with that crazy 87K number. He has some pretty impressive clients. He provides aerial imaging for “the U.S. border patrol, the Department of Homeland Security, companies building skyscrapers, and cell phone companies trying to decide where to build their towers, and others.”
By the way:
Now, because I've been getting a lot of requests to cover the size of yesterday's Rally to Restore Sanity event, which I did when the first numbers were first reported by MSNBC, I'll rely once again on AirPhotosLive for the newest estimates:
An estimated 215,000 people attended a rally organized by Comedy Central talk show hosts Jon Stewart and Stephen Colbert Saturday in Washington, according to a crowd estimate commissioned by CBS News.
The company AirPhotosLive.com based the attendance at the "Rally to Restore Sanity and/or Fear" on aerial pictures it took over the rally, which took place on the Mall in Washington. It has a margin of error of plus or minus 10 percent. (See some of the pictures used to create the estimate here.) [...]
TBD reported that because of the high turnout many would-be rally attendees retreated to bars to watch the event.
Same place, same company with the same excellent reputation, bigger numbers.