So I'd say over the years, one of the most common criticisms I see of Improv Everywhere left anonymously on YouTube comments is: "These people have too much time on their hands." And you know, not everybody's going to like everything you do, and I've certainly developed a thick skin thanks to Internet comments, but that one's always bothered me, because we don't have too much time on our hands.
Diría que en los últimos años la principal crítica que veo a Improv Everywhere viene en forma anónima en comentarios de YouTube: "Esta gente tiene demasiado tiempo libre". Es lógico pensar que nuestro trabajo no le va a gustar a todos, y gracias a Internet me he armado una coraza pero eso es algo que siempre me molesta porque no tenemos demasiado tiempo libre.