The best way to do "cloud mine" (mining online) and trade altcoin.
You can trade GHS (power of computer) that you use to mine.
You automatically mine BTC, DVC, NMC, and IXC.
You can trade NMC for GHS, so can create an automatic cicle (NMC->GHS-> BTC and NMC -> GHS etc.etc) to win difficult every week.
Look my power and earn with me mining altcoin:
<a href="https://cex.io/r/0/petreius/0/" title="Bitcoin Mining and Trading" target="_blank"><img src="http://cex.io/informer/petreius/700fa3e84a9e7ddb0372cc62ac90b8fb/" width="500" height="35" border="0"></a>