manifest.json

{
  "manifest_version": 2,
  "name": "Arsewipe",
  "description": "This script filters out the irritating little turds clinging to the comments",
  "version": "0.1",
  "content_scripts": [{
    "matches": ["*://timworstall.com/*", "*://www.timworstall.com/*"],
    "include_globs": ["*timworstall.com/????/??/??/*"],
    "js": ["arsewipe.js"]
  }]
}