For the time being, suffice to say, having bitcoins in your possession is already the best investment one can make with your traditional fiat paper money. In my view, it makes no sense to invest your bitcoins in businesses running in the old monetary system and producing regular currency returns-
The above principle already filters out nearly all potential investment deals which is a good thing. That said, history has been abundant with scams related to Bitcoin so tread very carfully and seek to understand and comprehend fully the business model before leaping forward. Also, the level of fraud is about on par with the other regular financial systems.