If you potentially want to add more high risk customers to your list, there are many exchanges but some of the other popular ones you might be on the lookout for include Coinbase, Kraken, and Cryptsy - you can fund via debit card or direct ACH once you verify your account. I've done keyword searches of our transaction data and have identified several customers using some of these exchanges, however, it seems most of them are one-off activities. There has a been a huge spike in news related to cryptos the last few months because the value has jumped so much which is why you might be seeing more customer's involved.