I like the Application reputation : http://blogs.msdn.com/b/ie/archive/2011/03/22/smartscreen-174-application-reputation-building-reputation.aspx : feature in IE 9 however I'm not a fan of the Settings menu , which is not very user friendly....
Also , is there a IE add-on market or something like that?
Note : Tried Opera for a few days.... I love how it looks and feel !