If your Tapas profile description is over 3 lines long, it's not gonna show up in the pop-up that appears when people click on your avatar!
Conversely, if you click on someone's avatar and you see no description in the pop-up, they might actually have a description; it's just too long to show in the pop-up! Go to their profile if you want to see for sure :'D
I feel weird making a whole arse thread about this and idk how many other people needed this info, but eh 
