martinibuster - 1:51 pm on Feb 26, 2013 (gmt 0)
For link building where you're trying to convince link partners, the About Us page and Contact Page is important. An About Us page talking about how you're the leading provider of bla, bla, information to consumers is spammy and a web publisher will understand it.
For link building where you're acquiring a mix of article directory style links, WP template links, etc., the About Us page doesn't matter. The fake About Us page is at this time good enough for Google. But a site like that is ranking with unearned links so it doesn't really matter until the algo catches up with the links and/or the fake About Us page.
I'm not sure if Google even uses these pages as a ranking signal, but if they do it's a minor one, probably because of too many false positives if they put too much emphasis on it. Just an opinion.