Professor became a ghostwriter?

I read something "extraordinary" this afternoon. Professors and university graduates cannot land a decent job and became ghostwriters for college students. Yeah, it is not ethical; yet ... the reality is that people need to pay the bills and put the food on the tables for their families!

Here are some of the articles I read:

http://www.huffingtonpost.com/2012/04/09/unemployed-professor-texas-tech_n_1412585.html

http://growingleaders.com/blog/confessions-of-a-ghost-writerfor-students/

http://www.joannejacobs.com/2010/11/confessions-of-a-ghost-writer/

The question is... what can you do if you recognized your student who hired a gohostwriter? Probably nothing you can do.