Lee Gomes at the WSJ has written this story dissing User Generated Content (UGC). In it he likens mashups to the kind of cut/paste montages kids get as busy work in elementary school: full of fun, but signifying nothing.
I guess I'm not sure that I completely agree. Sure there will be some fiddling around, but it seems to me that there is more than one documentary that relies on previously shot footage or photos (Ken Burns?), yet still manages to be stunningly effective.
We've seen blogging take off as a popular UGC medium. Most of us are totally trained in writing text, drilled at it through years of school. Even so, most blogs are pretty casual and would not be in line for a Pulitzer, and instead are meant to be read by a small, intimately known audience.
The biggest problem with UGC for multimedia (IMHO) is that most of us are not trained in the film arts. Writing a script is a nontrivial activity. Nor do we have the patience, money, and team to help us get lots of camera angles, etc. to make a real film. Just putting a cheap tool that enables short film editing doesn't seem to me to be enough. We need to understand what kinds of stories that regular people want to tell and then build focused tools (perhaps that automate parts of the process) to help them.