I use a laptop as a main computer And the desktop we have has a cheap $60 graphics card. It won't mine anything. I am just wondering what I am missing here. With the calculations I am doing with 72GH/s that would be 83k worth if bitcoins a year. I know it must be wrong. I just don't know if I should even start trying to mine if I won't make anything. Also if the block thing is going down to 25 instead of 50 wouldn't that make bitcoins worth more?