There is a huge problem currently with xtc-pills containing PMMA[1] in Europe.
Also a lot of the deaths are during festival peak season. Overheating and as often a response drinking too much can cause critical health issues.
This just shows how providing free tests at party's, more honest and thorough education etc can safe lives.
[1] http://en.wikipedia.org/wiki/Para-Methoxy-N-methylamphetamin...