I'll start.
We have been doing quite a bit of work in this area, just to think about what cryptocurrencies mean for us in the tax compliance world. As with e-commerce, it's a growing industry, and we want to make sure that we're aware of how it can be used positively and where it could pose some challenges for us. We've actually set up a group of people to look at that.
Ted, maybe you want to give some brief insight into the work we are doing.