From Fan History Wiki
- Between August and October 1994, Cort Dougan took over John Ruchak's X-Files fan fiction ftp archive.
- By September or October of 1995, the term betareader was being used in the Sliders fan fiction community on their big mailing list and on Usenet. (Wendy Perkins)
- In October 1995, the first Mulder/Skinner story was written. It was "Authority" by Laura Cooksey. It would set the tone for future Mulder/Skinner fan fiction. ( Rosalita:  )
- Between October and December 1996, the Mulder/Krycek Romantics Association was created.
- In October 1999, Harry Potter and the Prisoner of Azkaban was published in the United States. 
- By October of 2000, the Wicked X Witches's influence and position in the community was heavily on the decline.
- On October 29, 2000, the Discworld mailing list newcitywatch was created. 
- Around October 2000, Heidi8 began posting her own fan fiction to the group HP_FanFiction and to FanFiction.Net.
- ParadigmOfUncertainty saw its volume peak in October of 2000.
- Cassie and rhysenn saw its volume peak in October of 2000.
- In October 2001, JayKay proposed the idea for the Snape Slash Fleet on the snapeslash mailing list. (White_Serpent: )
- On October 29, 2001, Shin kidô senki Gundam W premiered on television in France. 
- In October 2001, JayKay released the story "Too Wise to Woo Peaceably." 
- Around October 2002, LittleOni plagiarized two Tenchi Muyo authors, Diane Long and Hospitaller. LittleOni also plagiarized a Sailor Moon story. 
- Between May of 1997 and October of 2002, through the Sword and the Staff, nearly $400,000 USD was donated by Xena fans to various charities. ( Web.Studies, edited by David Gauntlett, Ross Horsley, pg 90 )
- On August 12, 2002, the LiveJournal community, badfic, was founded. By October of 2003, the community would be discussing Digimon fics.
- On October 29, 2002, the LiveJournal community harrypotterkids was created. 
- Aja used to be a friend of Cassandra Claire but the friendship ended acrimoniously in October 2003.
- On October 29, 2003, the LiveJournal community simpsons_obsess was created. 
- On October 29, 2003, the LiveJournal community 10th_kingdom was created for the discussion of, posting of icons and fan fiction related to the 10th Kingdom. 
- In October 2004, fandom_wank debated the issue of community moderation. (fandomquibbler)
- Lil_Princess was a Good Charlotte sock puppet fan fiction writer on FanDomination.Net. This sock puppet, creator unknown, was active in the period between October and November of 2004 and had a point when she created a massive fannish incident.
- On October 29, 2005, the LiveJournal community spn_flashfic was created. 
- On October 29, 2008, the Smallville LiveJournal community sv100 was created for weekly drabble challenges.