Looking at the current amount of Fiat invested into Bitcoin, we are nowhere near, at all, even remotely close to where the price of Bitcoin will stop rising. Looking at http://bitcoincharts.com/markets/ we are in the hundreds of millions invested into Bitcoin. Let's be nice and say that there's roughly 1 billion dollars invested into Bitcoin at this moment, on a global scale, that amount is a joke. The $/BTC will fluctuate heavily, given that the currency is in its infant stage, but over time, we've all seen the trend and that trend will continue.

The potential for criminal activity with Bitcoin is extreme and people are slowly catching on. Tax evasion, drug money, extortion payments, the list goes on. If you're a criminal and you're getting paid/paying in Bitcoin, financially, you're untraceable if you know what you are doing.

We have seen nothing yet.