The web2py tagline is currently: 'Enterprise Web Framework'. Massimo agrees that this might be improved and this thread is to solicit suggestions. Ideally suggestions would encapsulate the 'spirit' of web2py or stress a feature(s) and simply make it seem more attractive to new users.
As an idea, here is one suggestion (inspired by Bruno) stressing the productivity of web2py: ** Web2py - the Framework that gets things done! **