Yes, Reddit is a quite big source of traffic. Here you can get the quality traffic especially from the United States. You can post your content or blog post link in the related subreddit. Make sure to post the content in relevant subreddit, otherwise, reddit will ban you.
To become an authoritative user on Reddit, you need to earn the karma points by posting funny, technology related video and images. You can gain the commenting karma points by leaving valuable comment on the posts. In return, you will get karma points, might be a good award or achievement. I consider Reddit as an important platform to generate traffic for your website.