We would like to take this opportunity to acknowledge the time and effort devoted by reviewers to improving the quality of published work in UMUAI. Authors often write to express their appreciation for the detailed and useful comments that we obtain for them. Only rarely do we receive complaints, even when the reviews are negative. This is a tribute to the spirit in which reviewing is undertaken for this journal. It is a pleasure, therefore, to be able to pass on thanks from the Editorial Board to the following researchers who also reviewed papers for this year:

Fabian Abel, Ryan Baker, Paul Blayney, Iván Cantador, Darryl Charles, Ben Cowley, Juan Fernández-Olivares, Tracy Hammond, Simon Harper, Christoffer Holmgård, Robert Jäschke, Markus Kächele, Juho Kim, Helena Lindgren, Gerome Miklau, Yashar Moshfeghi, Radek Pelanek, David Riaño, Yuval Shahar, Patrick Sheehan, Mohammad Soleymani, Dara Sorkin, Sergey Sosnovsky, Marcus Specht, Maja Stikic, Marco Tkalčič, Miriam Vollenbroek-Hutten, Tamar Weiss, Stephan Weibelzahl, Martijn Willemsen, Michael Yudelson, Tianqing Zhu.