I get average of 9 clicks per/day earn me about $1, not much, but that keep the site running. but some days I get so many clicks like today (26 clicks in just 2 hours). It is just weird, those clicks make one cent or 0 each because they are invalid? I think some dudes just got drunk and went to my site clicking on those ads. Feel bad for them. Why don't they just go to sleep when they are drunk.
It's probably not the drunk rebels. LOL. Drunk people don't often sit a play on the computer (although I did hear a lot of 13yr olds mouthoff about it when playing online games. "Oh, I'm so wasted DUDE!". Since you didn't mention the site it's hard to know for sure, but maybe becuase of the type of site you have good days because certian days of the week are at high demand. For example, my dinosaur website. Saturday and Sunday is always at 95% referral traffic, but during the week the referral traffic is at 20%. Not only that but the traffic on the weekend totals under 200 unique visitors a day, but during the week it grabs 2000+. So, it's pretty obvious that people don't get a lot of dinosaur essay homework over the weekend in the world. Now my Arcade gets Jack on Mondays, tuesdays, and thursdays (well not jack, it still grabs 1500u/v), but on the weekend it goes crazy. So it may not be invalid clicks, it could be just traffic up. If not, then it could simply be that a few more people went in the ad, then back out straight away.