Pseud is short for pseudonym, or pen name, and it is an additional name associated with your account. ... Unlike user names, they don't have to be unique. You can go by any name you like, even if your pseud is the same as another Archive user's user name or pseud.

What does the 3 stand for in AO3?

It combines the characters A, O, and 3 with arms raised in celebration, symbolizing the joy of fannish creation on the Archive. The acronym "AO3" comes from the initials of the English site title Archive of Our Own–an A and three O's.

What is the most popular fanfiction on AO3?

The most liked fic is "I am Groot", with over 99,000 kudos. The story with the most hits (over 3 million as of July 20, 2021) is "All the Young Dudes", set in the decades preceding the events of the Harry Potter books.