I think this is only possible in Western societies such as Italy. It sometimes makes one wonder where this is going to stop if it was allowed to go on. The true identity of the pornstar in fact was blown back in 2002 by her students. She travelled to Germany last month to attend an international porn fair there. She's also posted stark naked on YouTube.
If a teacher can double up as a pornstar on the Web, why can't he/she double up as a prostitute after school?