berto - 8:45 am on Dec 12, 2007 (gmt 0) Looks neat. I hope it works to publishers' benefit.
I clicked on the arrows in a 160x600 wide skyscraper and simply observed more ads being displayed. I don't see any harm in it. That is, I did not click on any of the individual ads and was not redirected to any advertiser site, so no advertiser was charged. I may be wrong, but I think everybody can relax about this. It's akin to clicking on a link unit link and viewing the follow-up ads page.
Looks neat. I hope it works to publishers' benefit.