In the last years the connections among algorithmics, game theory and economics got stronger and many specific themes arised which are of interest for the group. One research area concerns the use of concepts and techniques imported from Game Theory and Mechanism Design for the design and analysis of routing protocols when the network nodes behave in a strategic manner (i.e., driven only by economic interests). A second topic concerns the problem of the existence and computation of market equilibria. A third research area concerns models and algorithms for the “On-line Ad-words Auctions”.