A 1 bitcoin investment in a contract a year and a half ago yielded 0.2 bitcoin in that year and a half. Difficulty is astronomical. Only high capacity miners in low power cost areas and the guys running the pools are profitable. Bitcoin is not for casual miners. Stick to memory hard GPU mining like Ethereum, Dash or BTG.
RE: There's a Bitcoin GOLD RUSH Going on - How to PROFIT Big from BITCOIN