Now that you mention this, I've been looking for a way to invest into stocks with my Bitcoin. Imagine being able to invest into any stock such as Facebook, Google, etc just using your Bitcoin. As far as I can tell, this doesn't exist yet but once it does it will definitely make it very convenient to invest into them.

Another good investment strategy would be, in my opinion, to invest into a casino's bankroll as it is a pretty good opportunity to earn some profits for long term.