在海外要人民币有什么用？无法买东西啊。

Hey guys,

I built a bitcoin price monitoring system with very nice data visualizations where you can see the BTC prices across all major BTC exchanges in the world, in almost real-time. It could be an useful tool if you use it properly. For instance, there was a good price-diff arbitrage opportunity this afternoon when Kraken's price dropped a lot. With this monitoring tool you can notice it and buy BTC on Kraken then sell on Coinbase/Gdax or other exchanges.

There's proof of Kraken's outage. (The site was partially unavailable, but not for all users).
https://status.kraken.com/

You can see the price declines clearly on my graph.

I'm thinking of sharing this tool with the community, or charge you a little bit to cover the cost.
Anybody would be interested?

Here are some screenshots.
(I took Bitfinex and BTC-e out since it's hard to deposit/withdraw USD to these systems, but I can definitely add them if you want.)

I can build customized graphs too if needed.