nope. no one can: http://www.slate.com/articles/technology/technology/2014/06/online_advertising_effectiveness_for_large_brands_online_ads_may_be_worthless.html

nope. no one can: http://www.slate.com/articles/technology/technology/2014/06/online_advertising_effectiveness_for_large_brands_online_ads_may_be_worthless.html http://www.slate.com/articles/technology/technology/2014/06/... Just another bubble in the making -- just be ready to pull out at the right time.