Telling experts from novices and spammers

Here is an interesting paper on Telling experts from novices and spammers.

See this making of an expert:

It takes time to become an expert. Even the most gifted performers need a minimum of ten years of intense training before they win international competitions.

May be MOOCs are still too new to professors and experts.  So, to become an expert in MOOCs, one needs to practice, practice and practice. Right?