The adoption of the Wikibox as a form of microfiction in AH has to be unique in taking a ubiquitous form from a reference source used in storytelling. A unique form of epistolary storytelling.
It's like if the pulp magazines had pages of telegram messages describing the Deep Ones coming ashore at Innsmouth or Doc Savage discovering a lost civilisation in the Amazon.
Of course, there is one thing about Wikibox use in AH that has always given me slight pause. How the hell does Wikipedia always end up the same way in every TL?