First off when Facebook issues a warning , the warning page is NOT SPECIFIC, meaning they are only suspecting one is using some kind of automation and/or bot software/script. The warning just tells you that if you are using any kind of scripts,automation and/or bots to stop or you could be banned in the future. It does not say or name what that person might be using. It also says if you are clicking frequently in a short period of time or have multiple tabs/windows opened for Facebook pages might be the reason why you are getting a warning message.

I have received these warning screens before just by clicking too many times, too fast while playing Mafia Wars. Why in the world are you clicking that much on MW Viet!? You ask? Well I do the jobs that cost 2 energy each time and when you have 1700+ energy that's well over 850 clicks. I do this sometimes two times a day because of energy packs =p