While researching approaches to lower the threshold of content
production in applications driven by user contributions I was
wondering whether research in the relative difficulty of creating
"Relative difficulty of creation" relates to the question what kind
of tasks a user regards as more difficult than another. e.g. is it
more difficult for a user to answer a question or to post it?
This relative difficulty might be specific to a particular user, so
how can I asses it?
Are there any concepts old or new out there that describe a hierarchy
of relative difficulty?