I've just set up a new site and put my new adsense units up in the form of a 300*250px ad. Now i know its a long shot as i've never heard of it being possible before, but can you set how many ads you would like to show on this adsense unit? Sometimes it shows 3 ads with slightly bigger text, and sometimes 4 ads all squashed together with smaller text. is there any way to control this without being a premium publisher?
No it isn't that. I have also noticed it and just figured that at times they have limited ads to be shown at that particular time I viewed it. I have them side by side on a couple of sites and they mostly show 4, but occasionally one will show 4 and the other 3.
Adsense makes the ads either 3 or 4 ads in the 250x300 units as i understand, im just wondering ether theres a way to keep it either one or the other?