Examine source code of RedditLurk

{
  "manifest_version": 2,
  "name": "Lurk",
  "version": "1.1resigned1",
  "description": "Blocks your ability to comment on reddit posts and reply to comments",
  "icons": {
    "32": "Lurk.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "commentblock.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{028fdefe-87d6-4152-81c1-64f6aa617586}"
    }
  }
}