From the PredIQt website, "We’re happy to announce that today, we’ve officially launched the PredIQt Knowledge Market on the EOS mainnet! We’re excited for you all to try it out, participate in markets, and begin to earn from your knowledge!"

Below is a short user guide to help you get started on PredIQt:
  / prediqt-user-guide  

For more information, visit the PredIQt website at:
https://prediqt.everipedia.org/