Since it's original release in 2003, Firefox has had a continued increase in the market share of web browsers. Exact numbers are difficult to determine, but as of March 2007, in North America Firefox had a 15% share<ref>http://marketshare.hitslink.com/report.aspx?qprid=0</ref>, and 25% in Europe<ref>http://www.xitimonitor.com/en-us/browsers-barometer/firefox-march-2007/index-1-2-3-77.html</ref>. | Since it's original release in 2003, Firefox has had a continued increase in the market share of web browsers. Exact numbers are difficult to determine, but as of March 2007, in North America Firefox had a 15% share<ref>http://marketshare.hitslink.com/report.aspx?qprid=0</ref>, and 25% in Europe<ref>http://www.xitimonitor.com/en-us/browsers-barometer/firefox-march-2007/index-1-2-3-77.html</ref>. |