What is Facebook missing in your opinion? What could be added to make it better?

[Victor Lai Tiong]

allow the users to delete or reedit their inbox sent message within a time period and after the time period, the message will be permanent in the recipients inbox. allow their users to create their own custom emoticon. when we search for pages, there will be a lot of junk profile appear. it will be better if pages that are inactive for 3 month to be deleted. add function to allow users to publish gif format. The concept of facebook home can be applied on desktop/laptop/pc where users can install it and get the same function as what it provides in browser view without opening the browser yet only within the application. able to save pages or content for offline view. provide a function to search nearby people (unknown person) within a certain kilometres in an area for chat purpose and facebook can monitor the content whether it is offensive or the person tied to past criminal record to get auto restriction as well as police officer to get alert.