I have websites perfoming really well in Google owning the #1-#3 spot for competitive keywords. These same websites are deindexed in Bing & Yahoo. These websites were ranked using Spammy techinques for link building. Are Bing & Yahoo better at detecting SPAM and penalizing? Anyone experienced the same things? All websites are 6 months + old. I am not complaining that I am ranking better in Google but I just find it strange that Bing/Yahoo catch up on spamming and Google does not.