Today i have gotten 5 clicks so far and yet i have only gotten $0.02, that is completely stupid and to make it worse the money was showing hours before the clicks so it appears that those clicks were worth nothing. link
Several ways this could have happened. 5 invalid clicks and $0.02 cents from CPM, 4 invalid clicks and one valid click at $.02, 3 invalid clicks and 2 valid at $.01 a click, etc. A percentage of everyones clicks come's back invalid, so it is nothing to worry about. Focus on traffic and ad placement.
Invalid clicks, or you could've gotten smart-priced if your CTR is less than 2% on ANY of the sites you're using your code on.