I like this article from the SEO Theory and Analysis blog: In SEO, you can always say it again. In it, author Michael Martinez contends that you can do as much keyword research as you like, but you’ll still see queries you’d never remotely considered if you look at your logs. It’s a mindset we should all get into.
AND IF YOU’VE GOT TIME FOR ANOTHER ONE
From Search Engine Journal: Blended Search : How B2B Companies Can Benefit – “There’s a craze sweeping the search engine marketing world, but thus far B2B marketers have been slow to catch on…”