By Teddy Nykiel BRUSSELS, Jan 25 (Reuters) - In a world of iPads, GPS and digital technology at your fingertips, one international tourism organisation has discovered that few things beat the traditional fold-up map. USE-IT, a non-profit group that traces its roots back to 1970s Denmark, is an independent maker of free and funky city guides aimed at students and other young travellers, and it's developing a cult following.