Share buttons created Reddit flywheel

The share button mattered because it turned the open web into Reddit's unpaid distribution network. Every blog post or news article that added a Reddit button gave readers a one click way to move that link into a subreddit, where the real product was not the link itself but the long comment thread that formed under it. That made outside publishers a steady source of raw material, and Reddit the place where that material got ranked, argued over, and spread further.1 2 3

• This was a product level contrast with Digg. Digg centered voting on links, while Reddit made discussion deeper and more visible through threaded comments and subreddit level communities. That meant each shared article could produce a durable conversation, not just a spike of clicks.1 2
• The loop worked because publishers benefited too. A Reddit button sat next to email and Facebook share buttons on article pages, so readers could push stories straight into communities already organized around tech, politics, sports, or any niche topic. More articles shared in meant more reasons to return to Reddit.3
• Once that habit formed, Reddit became bigger than a link aggregator. By 2010, as Digg stumbled after its v4 redesign, Digg's monthly traffic fell from 29M uniques to 7M while Reddit grew from 1.7M to 9.2M. That traffic base later became the input for Reddit's ad business and eventually its public listing in March 2024.1

Going forward, the same mechanic keeps compounding in a different form. Reddit is no longer just where links get reposted, it is where people go for the discussion layer on top of the web. That makes its strongest asset the archive of niche, high intent conversations that advertisers, search engines, and AI companies all want access to.1