"Facebook users are generally careful about what they broadcast." there are already lots of spam websites and fb apps, that trick into being a fan... i mean, "

"Facebook users are generally careful about what they broadcast." there are already lots of spam websites and fb apps, that trick into being a fan... i mean, "like" pages using js. this iframe only makes it easier. i can even imagine spam js links altering a legit iframe, hoping a user clicks it afterwards.