I am back home again from DrupalCon Barcelona 2007. I must say that it was a very exciting event. It was fantastic to meet people with whom I last met in person in 2005 in Antwerp (on the first famous meet-in-person developer meeting which was in a hotel basement). The Drupal community grew a lot since then. Dries mentions that last years Brussels conference had 150 people while this years Barcelona event had 450, which means the conference is three times bigger.