Facebook has begun to roll out changes to the site in its efforts to appease critics of its privacy practices.

The change means that games and applications installed on a person's profile must specify what personal information they will access and use.

The changes were first announced in 2009 in response to work with the Canadian Privacy Commissioner.

In May 2010, the site was forced to overhaul its privacy settings in response to user concerns.

The moves were welcomed by privacy advocates.

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