Changing defaults around means that you're forcing people to learn new behavior specifically for your site. Not a particularly user-friendly thing to do. And i

Changing defaults around means that you're forcing people to learn new behavior specifically for your site. Not a particularly user-friendly thing to do. And in Safari, doing this would raise even more confusion; the default behavior works in other parts of the app (the next tab over, for example) but not the tab for your site. It is easy to see a user getting confused as to why something isn't working for one particular site. Maybe they want to copy text from a flash element, but it ends up doing something completely different.