Recently I found myself making a rough list of the things the Metaculus platform does, and realized it might be useful to have a full list somewhere on the site. So here's my initial version; it's got a mid-level of detail. I've put some somewhat hidden or non-obvious features in parenthesis; I bet even some quite seasoned users will discover some things! Please chime in with what I've missed or what you think people should know about.

• List questions
  • Display in table
    • Switch between Metaculus and community prediction by clicking graph
    • Express interest (affects interest and filter by interested)
  • Search (recently much improved)(note use + and * to require or exclude categories)
  • Filter & Order (note these are stored in URL so you can bookmark particular combinations you like.)
• Display a single question
  • See predictions (Click predicted percentage to switch community <—> Metaculus predictions. Mouse-over graph to see other times.)
  • Share question (you can use to get code to embed a Metaculus question as an iframe on any webpage)
  • List partners (you can "partner" on a Metaculus question in various ways)
  • List categories (click to get a list of all questions in that category)
  • Set reminders (get email reminders of various types)
  • Tachyonic powers (you can spend tachyons to undo some potential disasters.)
  • Predict on a question
    • If you "post as comment" your prediction will be displayed next to your comment.
  • Discuss a question
    • @ will pull up an auto*completed list.
    • You can link to a particular comment. You can find all of your or a user's comments on their profile page (if you can view it.)
• Create new questions
  • Public
  • Discussion
  • Private (private questions can be created, and shared with a few people. They appear in your own track record.)
• Display Metaculus track record
  • (Accessible via "mapping the future" in header)
  • Tons of functionality to geek out on. (Many things do something interesting if you click them.)
• Blog/News (Not well-known, but it exists.)
• FAQ (available in the footer. Lots of detail.)
• Rankings/Leaderboards
  • Contests housed here
  • Lots of filters on leaderboards
• Tutorials (available in the footer)
• Separate domains (see e.g. pandemic.metaculus.com. These can be public or private and can be offered as a service.)
• Profile
• Track record, powers, achievements, etc.
  • You get achievements for doing various things
  • You get powers at particular levels, but can buy them early using tachyons.
• Settings
  • Lots of notification, privacy, and other choices. (e.g. you can turn off the community prediction being visible by default.)
• Email notifications (control via settings, and via "notifications" you set up on questions)
• List categories
• Resource list (available on footer)
• Discord (there is a public discord channel, fairly active)
• Patreon (we have one! See footer. Donating give you bling and some extra powers.)
• About (find out more about the team and the plan)