I checked this morning and from 6 clicks received yesterday i've got $0.01? It's a wallpaper website i'm running and it isn't optimized yet i'll admit so is this a mistake?
Just like shockie said it could be CPM ads or invalid clicks from same person. Also I don't think you can get high paying clicks for niches like wallpapers. But this happens its something common. no need to bother about though it sux when it happens like that.