There have been many opinions as to the effectiveness of online display ads. Most of the articles I have seen recently state that display ads are still an effective way to get a message across, but that the click-thru rate of a display ad, not being real high, is not always that important.
I recently found a study that talks about this point and thought I would share it:
http://www.emarketer.com/Article.aspx?R=1007265
