YAPC::EU - over 200 participants
YAPC::NA in Salt Lake City gained more than 100 additional participants in the last 30 days, but they used a PR firm. I wonder if YAPC::EU will also get another 100 people. I try to log the numbers for future reference, but I am not sure how to help the organizers reaching more people.
The list of talks is certainly interesting and there are also the courses (and I hope my course will attract a number of people who would just want to learn AngularJS and as a side effect I can show them Perl as well.