if you have proper knowledge about trading,i reccomended you for doing trade,its safe instade of invest.investment site are strongly ponzi/scam.safe money is better then investment.
I think it depends on age. If you are young enough you can be more aggressive and take more risk which can get good returns; if you are old, you should and you have to be prudential and therefore saving money is a good way. Furthermore, nowadays investment is hard because of the to-be financial crisis. Investment in gold is a good way to profit.