i have just did a similar thing (images & ads) only difference is its a 468x60 banner and not leaderboard and images go round the ads more (currently only on this page
That could be a good thing if they are already looking/looked at some other stuff on the page and then see the image appear. It might get their attention.
My CTR was better after i added the images. I have the moving ad 5 days can't tell if it's better then the still images. I report it next week.
That's great too, congrats. The only thing that may not be allright is that I don't see any content ads.
CTR was better yesterday when I added the images, but the eCPM was down, more clicks, but they paid less. Grrr.. I'm interested to see if I will still get a raised CTR for a while, or if it will just be a temp effect. If its just short-term, I'm going to try this flash thing, as that might give it some nice variation. Josh