r/JackSucksAtLife is Jack's subreddit. On the subreddit, users post various Jack-related things, including memes. Some memes are made with custom Jack-themed meme templates.
Every Tuesday, Jack uploads a video to the JackSucksAtStuff channel (previously to JackSucksAtLife) reacting to posts on the subreddit. This video generally includes things such as the top post of the week, Jack joking about the subreddit being dead and a No Context Interlude, where Jack watches the latest upload on his channel "No Context JackSucksAtLife".
Various subjects have arisen in the subreddit over the years, some recent ones being Ugly Man Bathroom (Pretty Woman Kitchen's counterpart) and the Jackerpillar.
The subreddit currently has 171k members.