Dymero - 4:48 pm on Aug 29, 2013 (gmt 0)
You say that Bing/Yahoo are so different in their ranking factors that it'd make a difference, but are they really? Maybe five or six years ago, but now?
You speak of building links and using anchor text, but Google doesn't have a problem with that unless you're buying links or trying to manipulate rankings. I can't think that Bing doesn't also look for these things as aggressively as Google.