It has grown faster inside the United States than outside it, even though the biggest impact of the new technology may well be felt when consumers learn to use the border-hopping properties of the Internet to shop all round the world.
The effect on public attitudes to government, and thus on government's ability to act, may be felt only when another prime minister asks the country to trust his case for war.Yet the evidence of slipperiness and sloppiness that continues to drip out more may emerge if Gordon Brown eventually makes good on his pledge to hold a full inquiry into the war commands little attention.
Slow or rapid heartbeats may be felt especially when in resting phase.
The implications of this may be felt more in 2014, when Pandora will face global competition from rivals like Apple's iTunes Radio, as well as free personal-radio features in apps like Spotify and Deezer.
In a system with predators, impacts on swim performance may be felt at a lower level of infection when temperatures are elevated, increasing the vulnerability of fish to predation.
I imagine this is what Moses may have felt, when the Torah imagines his response to God's commands to go and free the Israelites from bondage, in this week's portion of Va'era.
Gameplay may be altered when it is felt that a game might be too easy or difficult for the Western audience.
The burden of disease may be heavily felt by patients and caregivers when the diagnosis remains unknown despite extensive investigation.
"There may be times when we feel that what we have done has not really achieved great results, sometimes there may be regressions, but that doesn't matter.
Irrespective of our age, or where we may be geographically, when we feel lonely, none of that really matters: We could be physically alone, sitting on top of Mt. Everest without a soul around, or we could be sitting in the middle of Grand Central Station in the midst of thousands of people and still feel isolated and lonely.
