Lately, I have been engaging in a very fruitful email exchange with prof. Fred Greene from UCLA, author of the blog Reviews of Previews and expert of trailer production. When he asked my feedback on his post on discontinuous editing, I replied with a long email, not knowing that my opinion was being considered for publication. I basically argued that trailers are productive both in industrial and social terms, since they are designed to foster interaction, audience appropriation and viral circulation. I was honored to find out that Fred thought it was interesting enough to repost it as a guest post on his blog. If you care for the extended version of the argument you can read it here.