ritualcoffee - 3:38 pm on May 7, 2003 (gmt 0)

I've seen a big difference in the quality. I've found that users coming from search engines have a higher click to lead ratio than those that come from traditional banners on related sites.

I see it as the difference between those that are actively searching out information and those that see a banner and go "oh, yeah - I wanted to know about that"