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Firefox hits 270 million users, without Linux

May 06, 2009, 03:01 (0 Talkback[s])
(Other stories by Sean Michael Kerner)

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"How do you count users for an open source application that does not require registrations? Downloads aren't accurate, since downloads include the same users that could have updated and/or downloaded revisions.

"What Mozilla does is they use their Application Update Service (AUS) -- the service whereby Firefox automatically calls home once a day looking for updates as a method. The number of users that hit AUS on a daily basis are called the Active Daily Users. Dotzler notes that there are 90 million active daily users. As part of a mathematical computation, Mozilla multiplies the number of daily users by 3 (hence the 270 million) to try and gauge how many total users they have -- since not all user are active every day (or so the theorem goes)."

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