What can I do now?

There are several websites to further your understanding of prostitution as violence against women, as well as organizations involved in trying to protect these women.

http://www.prostitutionresearch.com/c-prostitution-activism.html

http://www.soros.org/initiatives/health/focus/sharp/articles_publications/publications/pledge_20070612

http://www.catwinternational.org/index.php

http://www.polarisproject.org/content/view/50/69/

Here is also a link for various pro/con arguments surrounding the legalization of prostitution:

http://prostitution.procon.org/