A customer operates a forum where programmers ask each other questions, provide answers and rate questions giving them "ups" and "downs". The forum has a core expert community that provides good answers and valuable insights. However, they often waste their time handling questions of little to no value: marking questions as duplicates and redirecting them, closing topics with incoherent or irrelevant questions etc. Because of this, the overall efficiency of the system suffers.
He would like us to find a way to automatically recognize low-value questions and flag them.