We will be shutting down LingQ in approximately 1 hour, at 5pm Pacific Standard Time, to perform improvements on the site. We expect the site to be down for 2 to 3 hours. Sorry for the inconvenience. We will try to get it back up and running as quickly as possible.
LingQ is back up now. It may be a little slow for a few hours as the database is being re-indexed. It should be fine after that. Thanks for your patience.