I'll sit on an ever growing pile of bitcoins from wannabe miners, paying them a small percentage of their own money, until one day I disappear with it all.
OR just buy your own damn miner, because I cannot find a single mining website that is going to make you money. If it could make you money they wouldn't sell it, and if they are selling it for less money than they could make mining it themselves it's because it doesn't exist.
A typical old school miner viewpoint that really doesn't show an understanding of how business often works. There are many reasons to sell out some of your mining resources if you have a lot, but a key one is that you reach a point where you can build up mining resources much cheaper than a lone person can. At that point you can sell mining resources to raise capitol so that you can expand faster than you could by simply reinvesting. Doing this results in faster growth and reduced risk. The business is trading what it is good at for faster growth and actually higher profits.
In the case at scrypt.cc, the Admin has stated they are using GPU miners and have ordered a large amount of the ASIC script miners being developed by Alpha Technologies. That requires a lot of capitol to pull off. I've also seen multiple chats where advice was being given to customers on how to best set up their GPU systems. None of that proves it isn't a scam, but there is risk in anything. There are huge risks in setting up your own mining equipment too. In the end you have to choose the risks you are must comfortable with.
The future is with cloud mining, time to get used to it.