"Stefan presents 20 of the most common pitfalls and misconceptions in Plone development. Plone is a complex system, and it takes some time and experience to use it right. Over the years, Stefan has compiled a list of issues that have come up again and again on the Plone-users mailing list and the #Plone IRC channel. This talk will teach you how to avoid mistakes made by countless Plonistas before you, putting you on the fast-track to Plone Zen."