lol, I haven't noticed any decrease in adsense CTR.. so I think it a just extra income $1 or $2 a day maby? lmao Won't add up to quickly though Since it pays by CPM (banners) and the Full page ads. Just stick the banner at the bottom of your pages. and keep your adsense in the good areas.
I decided to stick with google never really tried adbrite....you would thing that it would be the opposite and google has the security but adbrite doesnt.
iv bin useing it for some time now . for a review of adbright and other ad networks go to my blog if any one would go there and post what your experience with ad networks it would be great. sorry there not leting me do a live link but here it is. addwheeldotcom