From what I am lead to believe the PC niche is pretty good in terms of CPC. I suggest you email Google to make sure that they are not invalid clicks as that is what I think. You may also want to look into using some keywords that pay a bit more in order to get a higher click amount.
I guess you have a lot of invalid click or maybe there are many click from one IP. Where your traffic coming from? Traffic from SE has a good revenue
well, i not sure about this, coz i not pro in this, but after go to ur website, ur content similiar to same website. did ur write urself? or u copy and paste coz ur blog is about software such as ur IrfanView 4.23 describe same as download.com and other also same/similar to download.com. Maybe u should test those software urself and write ur review or provide some solution -problem that u face when using those software? -Just my opinion/suggestion-
If there are invalid clicks it wont be counted. My guess is the clicks came from an area that your niche has low rates in, i used to get a few cents per click from areas and a few dollars from another areas for the same niche
you know there is no invalid clicks but 1 click = $0.60 and another one =$0.01 i got many of the clicks =0.01 and only one or two clicks per day which equal the high value