As in most cases related to security/privacy, the common user often lacks knowledge about what all this means. They've found an extension with a nice looking lo

As in most cases related to security/privacy, the common user often lacks knowledge about what all this means. They've found an extension with a nice looking logo and a good description that says it will replace ads with pictures of cats - and that's exactly what they want. In Chrome, you'll get a small popup box where you need to approve the extensions permissions. Things like "This extension can read and edit all the pages you visit" - but there's no further information about what this means. If there were an extended view, where different permissions were explained, the cat loving user might start to wonder why the extension requires permissions to read all their history, clipboard, cookies, etc. In the end, a lot of users will just click the OK button without reading anything. But there's still a greater chance of helping users make a decent choice when they understand what they're installing.