Related question: [FAQ: On the use of a non-metric system](https://skeptics.meta.stackexchange.com/questions/1001/faq-on-the-use-of-a-non-metric-system)

I was recently told on [an answer](https://skeptics.stackexchange.com/a/27395/14582) by Oddthinking to specify that the "ton" I used in the answer to be a metric ton (or tonne). 

However, I was under the impression that metric system was the default on this site, and it is the US-imperial short ton (2000 pounds) which should be specified when "ton" is used. 

Is there a consensus on which form of "ton" is the default?