Virtual currency? How about "follow the money" instead?
It would seem that since the group in the spotlight (ISIL, ISIS, or whatever they're calling themselves) have most of their major income from oil... sort out the companies buying the oil and the banks (aha.. there's why this won't happen) that transfer the funds.
This part seems more like looking in someone's wallet instead of at armored car behind them handing out the money.
Everything in this seems like so much eyewash and feel good stuff that won't accomplish a thing. However, as the article points out.. they never do anything "quickly" (for some value of quickly) so this may never come to pass.