Pages will be tagged just as photos were tagged previously - once the user tags a product or a person in a photo, the link of the corresponding page will appear under the photo.
Previously only friends could be tagged in a photo. Photos with this kind of tags are possible to hide from other users by changing privacy settings.
The action will not appear in the news, which is placed on the wall of a user and tapes of his friends. Pages can be tagged only by the users themselves. This will prevent the abuse of the new feature by companies for self-promotion.