Facebox

Facebox (フェイスボックス, Feisubokkusu) is a social media website in the world of Hunter × Hunter.

Dark Continent Expedition arc
Prince Halkenburg Hui Guo Rou once noted on his Facebox page that Tserriednich Hui Guo Rou is the one prince he accepts.

Trivia

 * Facebox's real life counterpart is Facebook.