Very unlikely IMHO. There is still caching, just not caching of the same resource used by different domains. Most people most times visit a small set of domai

Very unlikely IMHO. There is still caching, just not caching of the same resource used by different domains. Most people most times visit a small set of domains. All for which the resource still is cached from the previous visit. Combine it with the small likely hood to get a hit on cross domain caching the change in traffic is likely negligible.