I agree with velkro .. nicehash is not a good option many people there are having some trouble bout mining some says that they have lose some money and didnt have a good catch ... you must try it someewhere else ill comment here again once i prove that the one i am doing is paying good so i can be a hand for you .. bu for now goodluck !
I would LOVE to find out what people are doing with all them 80 dollar 333MH/s - 2GH/s USB sticks. lol
They are loosing money having fun.
Nothing else you can do with them.
My friendly advice is to leave mining to professionals with millions of $ put to it, to be able turn profit.
Depends, altcoin mining with graphical cards can be very profitable, even for users with a small pocket.
The only thing you need to start off with is 1 high end card, which you can get for ~500$.
Alot of gamers already have one aswell, not thinking about the possibilities.
I believe the ROI was indeed ~6 months with a 1070, which seems pretty good to me, everything you earn after that, minus electricity is pure profit, and mostly passive income.