I put together a report about my participation at the German Perl Workshop:
I think there were about 70-80 ppl.
I will soon write up something for LinuxTag Berlin.
For now, just couple of notes:
1) we very much missed lots of reusable posters we could put
on the walls behind us and in front of our info-points.
2) Some of the posters could also be used for fund raising
(e.g. a map of the CPAN community or CPAN itself).
3) We could have had a projector there - we had the space for it
but I did not understand this up-front.