I always wanted to mine but never had enough resource. Over month, I have gathered around 0.11BTC from faucets and twitter giveaways, with which I want to buy hash power. The cheapest one I see around is offered by www.cloudmining.website, which is 0.001 BTC/GHs. But, before I invest, I'd like to know what people want to say about their experience about this service. As it seems, at current difficulty, I should reach ROI at 4 month. Please advise...

Update 30/03/2015: In fact, I invested 0.11BTC in this service and have already made ROI.