Common sense suggests if something is too good to be true it generally isn't true. So rest assured that 100% of these "businesses" are plain old HYIP-Ponzi scams. No matter how nice their ads and websites are, the return on investment will be negative for the majority of users. These actors are trying to prey on the naivety of people who have just heard of Bitcoin through mainstream media mentioning the moonish gains of the currency in the past. The "magic xxx% trading system"-claim has been around in the scam scene since decades, yet still people seem to fall for it out of pure greed. Ask yourself: Why do these people need investment if they have a trading strategy that is so extremely profitable? It's sad that at times even google can't keep search results clean from these obvious frauds.

In the Bitcoin scene a responsible Ponzi operator at least openly tells people that he is operating a Ponzi. Even that won't prevent people from investing in the hope to be quicker than all others...

ya.ya.yo!