My site is in my signature. $10/day. I used to update it everyday, but been slacking. Have not updated in 4 months, but revenue has been increasing slightly...hav e done some promo like posting in related forum, asking for site review, got my site reviewed at hongkiat.com is probably the best traffic, next to google traffic, which accounts for 50%.
I've taken a look at your site. What are your traffic numbers? Keywords and CPC? You can PM me this for the sake of privacy. Don't worry, I won't steal them bc I don't do this for a living. One of my exgf was a pro at this and built hundreds of sites, monetizing them with adsense while she was in college. She was making over 6 figures per month for her boss. I'll tell you some of the secrets she told me.
Okay, right off the bat I see two banner image ads. One on top as your header and the other one to the left side. Is the banner in the heading where you convert click-thrus the most? People are blind to banner ads and they don't convert very well, however I have a hunch the header is where you're getting most of the clicks since it blends very well with your overall site. You can keep that there as it is. Next, remove the image ad on the left and replace that with a text ad block surrounded by text, placing that text ad on the right side within your articles.
I'll PM you with an example.