Invited Talk Paper.- Market Approach to Social Ads: The MyLikes Example and Related Problems.- Session 1A: Computational Geometry I.- Geodesic-Preserving Polygon Simplification.- Space-Efficient and Data-Sensitive Polygon Reconstruction Algorithms from Visibility Angle Information.- On the Edge Crossing Properties of Euclidean Minimum Weight Laman Graphs.- Structure and Computation of Straight Skeletons in 3-Space.- Session 1B: Pattern Matching.-...