It definitely should be implemented, Sep Blatter and FIFA officials are acting completely idiotic. Linesmen are not always accurate in decisions, there have been many controversial moments in which the ball had or had not crossed the line & linesmen have made the wrong decision. An example is the Round of 16 match, England vs Germany 2010 FIFA world cup in which Frank Lampard actually did score and the ball did cross the line but the linesmen overruled it. Also, we all know FIFA linesmen and referees can be completely aweful, and goaline technology will definitely eliminate idiotic and controversial decisions made by match officials. I really do not see a valid reason in which Blatter will not accept goal line technology, every single other sport has this, they see it as harm, but everyone else sees it as a tool of justice.