Sadomasochism in Europe

I just catalogued two books: “In the Name of Ishmael(In the Name of Ishmael)”:http://www.amazon.com/exec/obidos/ASIN/0786869402/libraryplanetcom/ref=nosim/ by Giuseppe Genna and “Platform(Platform)”:http://www.amazon.com/exec/obidos/ASIN/0375414622/libraryplanetcom/ref=nosim/ by Michel Houellebecq. Both by European authors and both with plots involving sadomasochism. Is this a trend, or what?