Looks like the girl who "overdosed" on ecstasy last week really did -
her pills had PMA in them.
As you may or may not know, PMA is very rarely found in ecstasy (typically their active ingredient is MDMA), but it can be used as a substitute because at low doses it has very similar effects to MDMA - euphoria, heightened sensory awareness, increased heart rate etc. But at higher doses (which can easily occur when taking a couple of pills - even one), it can be fatal - you can vomit profusely, overheat, and, er, die.
So if you're taking drugs any time in the near future, I highly recommend testing them first, or at the very least checking
pillreports.com.au very thoroughly.
This public service announcement has been brought to you by Brad, justifiable paranoia and the Bald Britney for President Brigade.