ActiveMining is currently hashing at 17.2KH/s per share - current dividends present a 25% annual ROI at current difficulty. 10,000 chips at 16gh/s each increases that to 6.4MH/s per share.
Sorry but I have to call you on your BS/bad maths.
ActiveMining is currently hashing at 17.2KH/s per share and last dividend is 0.00000220 per share which means with current price of per share of 0.00463200 will take 2105 weeks (40 years) to recoup share cost.
2105 weeks divided by 52 weeks is 40 years or 2.5% annual ROI at current difficulty.