The highest hash rate I saw (720) was only producing like $3.71 a day. How do people make a profit with this?
$3.71 a day.... That's $111.30 per (30 day) month, or $1,354.15 per year, at current prices (I haven't checked your $3.71 figure, just extrapolating to longer time spans). If you get a few of whatever card that was and have electricity cheap enough to not bite into too much of that revenue, you can make decent profit... I don't see what the problem is.
Now, it's not going to be something where you can buy hardware, then two weeks later you have paid it off from the magic unicorn bubbles that it produces; Bitcoin, and in turn the alt-coins that are derived from it, are not a get-rich-quick scheme. They can be a valid investment if done intelligently. I, for one, could stand to have an extra hundred dollars per month, but make sure you don't dive in too far: ALL ALT COINS HAVE FAILED EVENTUALLY, except for the few that haven't (If you'll forgive the tautological statement). Never invest more money than you can lose in anything.
