Someone who I know has used MDMA, or similar drugs, recreationally over the past 2 years.
In the past year, they have taken 0.3 -0.6 grams 4 times and 1 gram 1 time (approx 2-3 months between usage).
They are also planning on taking .5 grams on New Years Eve (31.12.13).
Given these numbers, do...