You might just be seeing Adwords advertisers who are using CJ, ie. I am an affiliate of Company X through CJ, I bid on a keyword of their product that appears on your site, when someone clicks they are sent to a CJ affilliate URL that corresponds with Co. X.
Hi cheers for the reply, I have Adsense on my site and I was checking the link out. This is what i found. http://pagead2.googlesyndication.com/pagead/iclk?sa=l&ai=B0dCoRwjuQ6irNabEqwKy6rC_Aui88BP4tszjAcCNtwGw6gEQARgBIOP__gFAihZIlDlQ6cGIg_r_____AaoBCjQwMTY1NzM0MzCyARJ3d3cuYmlkdXB0b2RheS5jb226AQozMDB4MjUwX2FzyAED2gEjaHR0cDovL3d3dy5iaWR1cHRvZGF5LmNvbS9pbmRleC5waHCVAibdSgo&num=1&adurl=http://www.jdoqocy.com/click-1899814-10372700&client=ca-pub-XXXXXXXXXXXXXX http://www.jdoqocy.com >>> goes to Commission Junction.
Could it be that either CJ or a CJ affiliate is using Google Adwords to advertise? I'm sure there are probably plenty of affiliates are doing that.