Before you invest in any site you must visit this to avoid being scammed.......
Badbitcoin.org
Is one of project created by bitcoiners. This is for bitcoiners. Give your time to investigate bitcoin sites and it's schemes that could harm bitcoin or it's users losing their hard earn coins. The badbitcoin badlist is a comprehensive list of those badsites that we have come across since our launch in Feb 2014.
From non paying pay-to-click sites to investments and cloud mining - we are proud to say we that we have assembled the most comprehensive list of bitcoin scams and bad sites in order to save bitcoiners from losing your precious bitcoins to these crooks . This site is updated constantly to keep bitcoiners up to date, and we don't just expose these scams.
But we will also investigate any site on your behalf, alert sites with security flaws, provide advice to get your startup right and generally do good stuff for the bitcoin community and Industry.
We need your help as well.
If you know or come across any dodgy bitcoin related websites. You can help us all by reporting it to us.So we can investigate it where it is needed, we will list the site & alert the community via our main page, badlist and twitter 
If you are an amateur sleuth, we can help you with some useful tools and tips to help investigate sites, and we welcome input and suggestions on how we can improve the project.
We want you you to help us starve these scammers out of the bitcoin world, and with your help - we will.
Lot's of people got scammed, and that inspired Bitcoiner like us to create this project, so you don't get scammed.