An abbreviation for the online forum "Xena online community".
It is hosted on yuku and is a place for Xenites of all ages to go and talk about the shows Xena, Hercules, Battlestar and LOTS or to generally chill and make friends.
It has information on the cons aswell as cast and crew.
Person 1: So i was surfing on the XOC last night and found a ship dedicated to Athena/Artemis.
Person 2: That is so cool.