The official Coin Hunt World Twitter account can be found here:
Tweet Coin Hunt World
https://twitter.com/CoinHuntWorld
The Developers regularly announce Updates, Boosted Vaults, Photo Competitions, etc there.
Twitter Box
REMOVED GAME MECHANIC
These boxes no longer exist in the game. They were removed when all vaults gained the ability to take a Twitter Picture after correctly answering a Trivia question. Details on how they worked before removal can be found below.
More Details
After answering a vault trivia question successfully a Twitter Box can be triggered beside Prize Boxes and Resource Boxes.
The Twitter Box asks the player to share a picture of the vault location on 
Twitter.
Submitting the picture will no longer grant an additional 
Blue Key. Instead, players join a Photo Competition.
The Twitter message will include the vault location picture and the players referral code to the game.
Twitter has to be installed on the phone to be able to submit the picture in-game.
