It seems not a good return, 100 coins to make 0.2 coins per day... if you use those coins to buy miners, only 40 coins could make you 0.2 coins per day
But those 40 BTC are then gone, and may never see ROI let alone any profit. The 100BTC (if he's a holder anyway) are better working for him than sitting in some dumb safe wallet.
Not any bigger than the platform being "hacked"
Trying to invest in bitcoin and get more bitcoin back is quite old way of thinking, "investing" only applies to fiat money since fiat money lose value by itself thus you are forced to invest. For bitcoin hodling is the best investing method and almost risk free
You are lying, holding bitcoin is the worst investment you can make in 2014, maybe in 2015 too, sell your get rich quick dream to some one new but not at here
You are new around here, and for that I am sorry.
2014 is certainly a strange year for Bitcoin, compared to the past. You have cherry-picked your interval. Simply zoom out and see that, since 01 Jan 2013, Bitcoin has made gains over 2,000%! Those kinds of returns are unheard-of in any other market. The fact that you have only recently started paying attention to the price desensitizes you to how colossal the gains have been at 300 BTCUSD.
No one's talking about getting rich quick in terms of holding versus investing. Most bitcoiners clearly do not have the patience for a normal investment timeframe. If you invest, treat it like a stock. Purchase, put it away in a portfolio, and come back only after a couple of years at least.