Haha, I was asking about this just last week! http://www.seomoz.org/q/what-are-the-differences-between-google-seo-and-bing-seo
Unfortunately the discussion didn't get too much further than me saying what I got out of the link you posted above, a couple people saying do what's good for all search engines, and the rest from outside the US commenting that Google is 90% of search traffic in their country so they don't worry about Yahoo and Bing specifics.
All of which is good info but none of it answered my question. Maybe you'll have better luck?
