Alternative Cloud Hashing sites to Cex.io I am really impressed with Cex.io and their whole concept of trading Ghs for Bitcoin as well as cloud mining which I find to be novel and interesting.

Are there any other sites like that? I know there are a number of cloud hashing sites but what I am looking for is one similar to Cex where I can also do commodity trading.
Cloudhashing.com does cloud mining, but they did not offer trading the last time I checked.