MHes - 9:13 am on Dec 5, 2005 (gmt 0)

>Only large sites that get traffic from 1000's of keyphrases

Not true. One page with 1000 words can pick up 1000's of phrases.

>So how to run "targeted" marketing campaigns if 94% of your target is hard to predict (:(

A targeted 'campaign' done on your site through seo will only pick up traffic that used your targeted phrase. That's the point I'm making. A ppc campaign will in reality source traffic from users who originally searched for variations of that phrase but have been guided to you.