I wonder if I'm lucky of not. Chitika just accepted my application for my tech blog: http://www.techinfodata.info/ The blogs only have 4 posts and just running this month (only >200 unique visitor). Right now, I need tips/suggestion from anybody that has used C and earned money. Where is the best place to put this ads? Regards.
You should place those ads after or in between a review of the product. Focus on the content, the ad is just an addition. If blog readers will enjoy your posts the chances are higher you will sell something.
You could put one 468x60 on top of the article for those impulsive visitors and one at the bottom 468x180 (468x180 MPU) for those who actually read reviews.