[aganders3]

Potentially, but death is still pretty rare with impure MDMA and the effects can be felt. It's also a social drug, so I would imagine most buyers purchasing ~tens of pills and sharing them with friends. One would probably leave a bad review if a friend died.

Testing kits and services are also available so you could review the quality without even taking the drug.

[Evolved]

Be forewarned: A lot of these kits only test for the presence of, not quality/purity of, MDMA and other forms of E. That being said, someone would definitely pipe up and say "this killed my friend" if something were to go wrong.

[dobbsbob]

A test I learned in jail from petty computer trespassing charges when I was a kid is to light a small amount of powder on fire sitting on foil, if the residue is cherry red it's mainly mdma and not piperazines. Once again prison is criminal university.

If regeant testing a pill break it in half and test the inside too since often the outside is coated in mdma and the inside is shitty pipes