http://ha.ckers.org/blog/20081007/clickjacking-details/
http://hackademix.net/2009/01/27/ehy-ie8-i-can-has-some-clickjacking-protection/

« Convenience is number one factor in keeping browsers secure »
http://arstechnica.com/security/news/2009/01/upgrade-ergonomics-dominate-browser-security.ars