However, once it is switched on you only have seven days for the clean-up which might turn into an issue for the irregular Facebook user.

FORBES: Facebook Timeline Now Mandatory For Everyone

Because once it's switched on it can't be switched off?

BBC: Murder trial told 'choke hold' led to doctor's death

"But it was only switched on once before the attack and hardly used because Ismail got into action and was killed by police soon after, " the official said.

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Not only this, but once the protein was switched on, the mice started eating more, suggesting that it was part of a pathway involving the regulation of food intake.

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Highlights included the return of the open pit (unlike the Ozzfest which only allowed a 1000 or so into a cordoned off area), great sets from Iron Maiden, Audioslave, Mudvayne, Disturbed (once the mic was switched on), covered areas where people could escape the sun, watch films and play on games consoles, and two stages offering a variety of different styles.

BBC: Your festival reviews

Once a tape recorder had been switched on, Jensen, McCormick, and Dalio discussed the possible promotion of an internal candidate to a senior-management role.

NEWYORKER: Mastering the Machine

Despite being a leader in in-flight Wi-Fi, the United States bans the use of mobiles on flights, requiring that phones are switched off once they enter U.S. airspace.

CNN: In-flight phone calls to become standard, say experts