Human trafficking seems to be the "political correct" modern day bureaucratic terminology to refer to slavery. If you refer to slavery, it's likely that people will think you're talking about something that ended a long time ago, so perhaps it's best to call it human trafficking. There are actually many forms of modern slavery, and human trafficking has been getting an increasing amount of attention from development agencies in the past few years.
The Asia Foundation started a program to look at how ICTs can be used to address human trafficking. The answers are not simple and there are numerous challenges and opportunities to explore. http://www.asiafoundation.org/ICT/trafficking.html