Some stats: ~350 million users[1] ~17Mb download[2] Lets assume a full 25% is dev tools (I think its likely to be much less), so 4.25Mb per user. That's 1418Tb

Some stats: ~350 million users[1] ~17Mb download[2] Lets assume a full 25% is dev tools (I think its likely to be much less), so 4.25Mb per user. That's 1418Tb, or just under 500 3Tb disks. Considering that's spread across 350 million users, I think that's not too much at all, and its probably much less. [1]https://wiki.mozilla.org/images/e/ed/Analyst_report_Q1_2010.pdf https://wiki.mozilla.org/images/e/ed/Analyst_report_Q1_2010.... [2]http://www.mozilla.org/en-US/firefox/all.html http://www.mozilla.org/en-US/firefox/all.html