Has anyone else noticed that Yahoo Canada seems to have much more up-to-date data being used to rank sites than Yahoo's US search engine? I noticed some referrals today from the Canadian version, where to my surprise I was number one on several terms where the US search engine still has my site back in the 30's (stuff I started trying to rank for in December). Across several sites it looks to me like this is because the canadian engine has more recent data.