Organisers of the 58th Cannes Lions International Advertising Festival have announced the launch of the Cannes Creative Effectiveness Lions in 2011, which will honour creativity which has shown a measurable and proven impact on a client’s business. Only entries that were either shortlisted or Lion winners, across all categories at Cannes Lions in 2010 will be eligible to enter into Creative Effectiveness Lions 2011. Entries in the Cannes Creative Effectiveness category will be rewarded for Strategy (25%), Idea (25%) and Results (50%).