I always wanted to mine but never had enough resource. Over month, I have gathered around 0.11
BTC 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 0.11
BTC in this service and have already made ROI.

It is good that you got your ROI by investing in a legit cloud mining company, whereas there are many out there which are nothing but blatant lies and ponzis that payout only few months and they run away with your money, so beware and do your research well before choosing a legit one.