I was gratified to see MUSHclient make a brief appearance on Episode 21 of the ABC TV program "Good Game Spawn Point" which is an offshoot for younger gamers of their "Good Game" program.
In response to a viewer question about whether her parents let her play video games in her youth, presenter "Hex" (Stephanie Bendixsen) responded that she used to sneak off to a friend's place to play a Sega Megadrive, and used to play a lot of "old school text adventures when my parents thought I was doing homework".
The accompanying screen clip is unmistakeably MUSHclient - the font is the default font used, and the gray "Info bar" is clearly visible with its white edge on the top and left.
It's nice to know that amongst all that modern technology, 3D games and so on, game-savvy players still use MUSHclient to play MUD games. :-)