and for the 125 x125 banners, I do it so our advertiser get the best result on our website
im selling it for cheap and give a better placement so we don't waste our traffic and to cover some of our expenses
because as of now we don't have a better option placement and the price may change in the future
maybe you should think about implementing some type of banner rotator. Where you would share the same ad placements with few different clients, but not at the same time. New visitor or new page refresh brings new ad on this banner position.
I think there is probably some plugin for WP which can help you with that.
I just think out loud.
yes there is something like that
I'm currently using that kind of plugin in which the banner can be randomized and slide
every new pageview will show a random banner and slide to make banner change in a specific timeframe
maybe i will change it to a bigger size 728x90 or 468x90 some say 125x125 is really too small