And the Mozilla Foundation isn't too far behind the Norwegian firm, with a plug-in for Firefox on the way
http://chkpt.zdnet.com/chkpt/ukzdfeed/http://news.zdnet.co.uk/software/applications/0,39020384,39207993,00.htm
http://chkpt.zdnet.com/chkpt/ukzdfeed/http://news.zdnet.co.uk/software/applications/0,39020384,39207993,00.htm