How Facebook Clickjacking Spam works

Hello friends, today i will explain you How you all can prevent or protect your Facebook profile or account from getting Clickjacked by spammers or hackers or unwanted marketers. In last few weeks lot of media has exposed hidden dangers of using Facebook like privacy violation, getting spams or walls flooded by unwanted marketers or Facebook app alerts. But my friends these media people always make hype of small things. They usually blame the main organization in case anything unusual of the above things mentioned. But friends fault not always lies with main Company, sometimes you and other things are responsible for that like you not updating your web browsers, not installing security patches, not regularly updating antiviruses, not using web security toolbar etc. Clickjacking is one of those loophole, which is not because of Facebook, its because of your vulnerable web browsers. So friends lets first learn what is clickjacking and how Facebook Clickjacking spam works..