Yep that’s what I thought when I first saw that – 600,000,000 add-on (unique) downloads. That’s just for add-on’s and that’s UNIQUE downloads e.g. its an actual download of an extension/theme NOT an update. As posted on the Mozilla Blog of Metrics:
Earlier this week, AMO served its 600 millionth add-on download.That’s original downloads, not including updates. We currently have over 4000 add-ons hosted on the site and between 800,000 and 1million downloads every day. The site has around 4.5 million page views per day, not including services hosted on AMO such as update checks and blocklisting.
AMO now receives around 100 million add-on update pings every day,which means that of those 600 million downloads, about 100 million add-ons are still installed.
The breakdown looks something like this with the Firefox 2.0 branch getting 93% of the traffic while Thunderbird and the legacy Firefox 1.X branch get 4% and 2% respectively.
[Image credit: Justin Scott]
