QUOTE(boulay @ Dec 5 2014, 23:30)

Saw it too, it was probably impossible to notice until it got onto the portal ^^
That's not true. You can easily test banners. With Firefox, you just need to copy the url of the banner you want to test, go to the main page, right-click on the current banner, select "Examine Element", and replace the url of the banner with the url of the banner to test. It may be possible to write a script to do that, accelerating the process.