From the wiki:
"the name of a dead spider god which is said to be older than Abaddon and the other human gods. Arachnia is never mentioned directly in the game; however, within the gw.dat, the Arachnia Plateau is named after it and the descriptions of some Realm of Torment landmarks (i.e. Harvestman's Lair and The Spider's Heart) also bring up the name with the mention of "gods of insectoid beings.""
From the wiki:
"It was not an auction house but a place ("bazaar") to sell items for a fixed price. Players had a "Market" button in the Party search panel where they could find a list of items, searchable and filterable by categories in the current district or globally in the game. You had to spend a listing fee for every item, the amount is unknown, but would be variable, which would not be refunded when unlisted. The item had to be held in inventory while it was being offered in the Xunlai Market, the purchased item was put directly to your inventory and gold to your vault box. It is not known if the item could still be listed if the character was in an explorable area.
Localized German and Spanish strings were found in the dat file too so it can be assumed that the Xunlai Market was a well advanced project in extended testing status. The data was presumably deleted from the live dat-file in the January 31 2008 game update (source)."
Thank you! Feel free to respond to any or all of these questions. This AMA is very much appreciated