From Facebook Developer Wiki

Adding application content to a user's profile can be done with several API calls:

• Using profile.setFBML adds content to:
  • the user's main profile page, under their photo in the left-hand column
  • the user's Boxes tab
  • the user's profile on Mobile devices such as cell phones and PDAs
• profile.setInfo
• Wall Posts
  • Stream API
  • Feed API