Undocumented Facebook

This page is intended to keep notes of “features” undocumented by Facebook.

API

Poke

There is no official way to make a poke through Graph API calls. (source)

Posts

In any status, post or chat message, if you use [[fb_unique_id]] or [[fb_username]] (between double brackets), it will get converted to the “profile” icon of that user or page id. (source)

@[fb_unique_id:0] will be converted into a link to that user profile or page.

User information

The date of your birth can only be changed 4 times. (based on experience by Andre Castro)