Need more ways to make money with site has about 1500 Uniq a day

My wallpaper website www.gfxwallpapers.com Gets about 1500 to 1900 uniq a day now. Right now I only use google getting about 20 to 50 clicks a day not a high payout for that maybe anywhere from 1 to 2.50. I just added some descriptions for wallpapers so hopping to increase clicks and money example
http://gfxwallpapers.com/wallpaper/BMW-Z4-2004/
On the bottom of wallpaper I have a description about whats in the wallpaper.
I would like to know what else can I put on gfx to make me money? I don’t want to use any pop ups. I need a good paying program that pays and has good history. Also my site just went from PR2 to 3 that is nice. Lets hope keeps going up.
Here is some quick stats.
Month Unique visitors Number of visits Pages Hits Bandwidth
Jul 2008 3740 4294 24514 127383 1.99 GB
Aug 2008 7137 9604 42244 293711 4.74 GB
Sep 2008 13925 17984 112183 631724 12.21 GB
Oct 2008 22715 28219 210543 1352097 40.30 GB
Nov 2008 26365 33350 219094 1556653 47.00 GB
Dec 2008 31067 36277 277731 1761812 36.29 GB
Day Number of visits Pages Hits Bandwidth
26 Dec 2008 1518 10350 67920 1.20 GB
27 Dec 2008 1605 14286 73536 1.27 GB
28 Dec 2008 1607 10102 79137 1.47 GB
29 Dec […]

See original post by Ntech25