Findings:

• Nix
• Stix Nix Hix Pix
• *nix
• Kaki Nix Sain (user)
• Garth Nix
• The Nix of the Mill Pond
• nix (user)
• Nixx (user)
• nix krix (user)

If you Log in you could create a "?nix" node. If you don't already have an account, you can register here.