Remember, he doesn't speak for Yahoo and Bing... And even for Google, there is evidence that nofollow is treated differently depending on the site: http://www

Remember, he doesn't speak for Yahoo and Bing... And even for Google, there is evidence that nofollow is treated differently depending on the site: http://www.seomoz.org/ugc/using-twitter-as-a-sitemap http://www.seomoz.org/ugc/using-twitter-as-a-sitemap