Examine source code of No 'More' Yahoo!

{
  "manifest_version": 2,
  "name": "No 'More' Yahoo!",
  "version": "0.12resigned1",
  "description": "Directly opens external links on Yahoo main page (http://www.yahoo.com) in a new tab, without having to load the one-paragraph Yahoo popup just to click the 'Read More' button to get to the actual external article. Note: this only proves to work on Yahoo main page not (at least some) subdomains.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.yahoo.com/"
      ],
      "js": [
        "extract.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{aea56704-a79d-49b8-b476-53454b75774d}"
    }
  }
}