According to analysis conducted by us here at StatCounter, the Mozilla Firefox Guinness Book of Records attempt has been a major success in encouraging users to download Firefox 3.
Usage of Firefox 3 more than doubled between June 16th and 18th from 7.8% to 18.9%. Trend graphs are available here.
“The Firefox folks have certainly earned themselves a pint of Guinness,” commented Aodhan Cullen, CEO, StatCounter. “This is a major success in encouraging users to upgrade in a short period.”
We also found that the Guinness promotion seems to be having a generally positive effect on Firefox market share. The overall Firefox share of the browser market increased from 34.9% to 36% over the two day period while Internet Explorer fell slightly from 56.3% to 55.4%.