I have very complicated ad placement on my page that varies. For example index (2 link units): http://www.sandrophoto.com/ Category (banner + link unit): http://www.sandrophoto.com/category/car-photography/ Tags / Archive (banner + 2x link units) http://www.sandrophoto.com/tag/conceptual-photography/ And post (link unit + 2x banners): http://www.sandrophoto.com/2008/11/22/mysterious-ways/ what do u think? is it effective to like this?
I would avoid using too many link units and focus on using ad units instead. The banner should be alright.