The “LingQ is Temporarily down for maintenance” message says to refer to Twitter for more info and rarely is there any related post on twitter. It would be nice to post something to twitter in these cases, or have a different message on the same page that says how long the outage is expected.
Often the outages are quick, but when they happen in the middle of a study session, I’m a bit in the dark.
I do like the messages, it normally means that some new feature has been added.