I second @ironman, I bought bitcoins from @DaveAchkar with the yellowpay.co vouchers and the service was great. Quick transfer, and fast response time to emails. I would personally recommend you get the vouchers from Maliks or Khoury Home to avoid the Ihjoz and Credit Card/PinPay premiums which will add up to ~15% cost to the current market price.
For those interested in bitcoin cloud-mining and mining in general I wrote this blog post not so long ago describing an experiment with bit-miner.com:
Cloud-Mining profitability. The gist of the post is: Cloud-mining is not a good investment option for the short or long runs (read the post for more information about the model used for the assessment)
Now, regarding general mining, I wrote the following answer:
Profit Formula on Stackexchange describing the earnings from a mining operation over a varying period of time.
For a general overview on the state of affairs today, I recommend reading
this post from The Economist on the mining process and the 'so-called' magic behind it.
It was funny reading the first post in this thread by @arithma .. I really hope he did not sell those 9.5BTC for ~320 USD then :)
Edit-- I see a lot of misconceptions and wrong judgments being thrown around in some of the previous posts.. I really recommend extensive research before making claims that this currency is doomed or broker and whatnot, there's a plethora of documentation about this subject matter.
The only critical problem I see that could potentially lead to the demise of this currency (and not other alternative currencies out there) is the crash of the network as a whole (which could be due to many reasons). As far as adoption goes, I don't see a problem there, it's steadily growing and will keep on doing so in the long run. Now, when it comes to the volatility aspect, it will stabilize eventually when more large entities join the game and have vested interest in bitcoins stability.