It is an open forum for all discussions...thus referred to as 'The Sandbox'.
A message from Disqus Admin:
Testing read-only mode for upcoming scheduled maintenance
Scheduled for Jan 25, 16:00 - 16:30 PST
Disqus will be undergoing planned database maintenance Tuesday January 26th between 4-5pm PT. In preparation for Tuesday's maintenance window, we are testing read-only mode today, Monday January 25th between 4-4:30pm PT.