Best Prediction Markets Forums

FAQ

What are Prediction Markets forum communities?

These communities have a forum format, where typically any user can make a post, comment on a post, and upvote/downvote. Hive Index lists 17 prediction markets forum communities in the Hive Index directory of communities. Browse the full Prediction Markets topic for every platform and feature combination, or learn more about Forum communities across topics.

How many Prediction Markets communities with forum are listed?

Hive Index lists 17 prediction markets forum communities in the Hive Index directory of communities. This is a smaller slice of our database, so read trends as directional. See the main Prediction Markets topic for the full community list across platforms and features.

What are the most popular prediction markets forum communities on Hive Index?

r/forecasting, Metaculus, Polymarket, and Long Now Foundation are among the most popular prediction markets forum communities in the Hive Index directory of communities, based on visitor interest on Hive Index.

Which platforms have the most prediction markets forum communities?

Independent Platforms (11), and Reddit (6) host the most prediction markets forum communities in the Hive Index directory of communities.

Are there free prediction markets forum communities?

17 of 17 (100%) prediction markets forum communities in the Hive Index directory of communities are free to join , including:

• r/forecasting
• Metaculus
• Polymarket
• Long Now Foundation

How large are prediction markets forum communities?

Hive Index lists 17 prediction markets forum communities in the Hive Index directory of communities. The largest include r/futurology (21.7M members), r/SampleSize (271K members), and PredictIt (50K members). Median reported size is about 20K members. This is a smaller slice of our database, so read trends as directional.

How do I grow my Prediction Markets community with forum?

List your Prediction Markets community for free on Hive Index and tag it with forum so people searching for prediction markets forum communities can find you. Paid promotion can feature your listing more prominently across relevant pages.

How does Hive Index collect and rank these listings?

Listings are submitted by community builders and researchers, reviewed for topic relevance, and tagged with features like forum. Hive Index updates platform, member, review, and traffic data where available. Popular reflects visitor interest in the Hive Index directory of communities. These listings in the Hive Index directory of communities were last updated 10/14/2026.