so what kind of hack you are talking about . some one comes to sajha.com .. messed up with the thread with some scripts or random html ( remember sajha.com supports html scripting to be displayed) .. eventually it will is targeting users browser ( with mozzila or IE or safari)

If you have intelligent  browser ( like mozzila ) you can edit your post and remove it .. else you think it is a hack ..

I can messed up every sajha post with injected script. If somebody injects html script like this .. it is called server script  injection.

if you need to know more .. I will explain .. it is not linux .. it is browser ..