Last weekend (January 31 - February 1), the XWiki team participated in the FOSDEM 2015 event, in Brussels (Belgium). It was a great opportunity to meet the different Open Source communities, to share ideas and collaborate.
We attended conferences, we were volunteers, and also spent quality time together enjoying the Belgian dishes and beers. Of course, we also shared some XWiki goodies (notebooks, stickers, pens).
FOSDEM is the biggest Open Source event in Europe and moreover, with free access, it gathers every year a huge number of participants. We estimate that this year the number of participants was between 5000 and 8000 attendees, based on the number of the unique MAC addresses.