Buy 1-2 btc and invest in Just-dice.
Some investors get paid off handsomely.
Put very blatantly, SOME investors. I can't picture a lot of investors actually making money of a gambling site, regardless how much they put in to it.
If you invested in something that was less "luck" based, it would be far better. Purchasing mining contracts (depending on how you feel about them) could be a good investment, or it might be better to trade other crypto's back and forth. I do that, and I'm made some decent profits off of it.
It depends if you can play the markets well, however. You can end up failing miserably and lose all of it.
Choose whatever method you like! Work, faucets, investing/trading, it's all up to you!