Btc-e and Bitfinex are providing margin trading, Stamp doesn't. Guess which exchanges see these huge drops? 1+1=2 people, if you can't connect the dots you're an idiot simple as that.
Nah... they're gonna argue..... how do you know 1+1 = 2!
Just like they saw the LTC buy trying to squeeze sell shorts but it failed, they still ask " how do you know"
I'm not arguing that, in fact I'm arguing the exact opposite. This is just a natural side effect of having margin on your exchange. Manipulation or not, if people don't act wisely with their leveraged positions, then they can have liquidation cascades induced, and the triggers can be manifold, and do not have to be manipulative. That is my point.