One of my friends is into bitcoins and other alternative coins and he is using this service. www.cryptodeposit.net He invested about 5 btc. 3 of them he already got back with some % in profit and he is now waiting january for next withdrawal. If you verify your indentity on cryptodeposit.net then you will get nice bonuses and stuff but my friend has not yet did that he is using normal account because he said that there is some sort of payment for verified account or something. And I checked on google and internet and I see that there are response from people about this service and its pretty nice, so anyway there is this referral system and my friend sent me it, i've invested now about 0.6 btc and in january I should be able to withdraw. you can also invest other coins like litecoin or feathercoin etc. And they have more services not only investments but some other as well..but am sharing this with u now since u are looking for something like this I suppose. btw account creation system reminds me of a way joining a golf club but it seems secured that way from spam and bots.