Facebook is an incredibly popular piece of social networking software, which is used all over the world. However, it has come under criticism for many controversial aspects of its layout and usage. For example, extracting your profile from the social network is something which is actually surprisingly difficult; this is because when you choose to delete your account, the default option is to actually "deactivate" it; if you don't untick this box, then your profile is not completely taken offline and deleted, but it is only your public profile taken down; this is supposed to make it easy for you to return, as you don't have to put up your information all over again. Also, the relative openness of Facebook means that employers can trawl for "digital dirt" on sites such as Facebook.