No need to report $100 a month. I'm sure you're running a loss when you factor in Internet Connection Cost, Depreciation of your computer, printer, whatever. So the answer is no.
Besides, the unemployment office will never figure it out and even if they did, they don't deny your benefits. I've worked with unemployment offices building their systems so I know how they work. Even if you did some major fraud and owed 10k, they take it out of your benefits, like $50 a week.
Think about it, how bad it would look if the big bad government was taking away unemployment of some poor soul who happenned to somehow screw the government out of 10k. Actually unemployment is insurance, so it's not really the govt. money anyway.