at http://social.clipflair.net it was suggested that we were advised by the system to give a confirmation if for some reason a button is clicked that send as to another page, while in the middle of composing a text. ("As an example, I was composing an answer when suddently I pressed a button that took me out of the page occuring the loss of my whole text.")
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</br> </br>e.g. a wall post, a blog item, a forum reply etc.