Looking at Kyu's first tweet, I think he is referring to Young Saeng about that lyrics from Wings of the World. See Young Saeng's message regarding the same song's lyrics here. Aigoo, they're teasing Maknae on his business. How about trying clothes from yen? Eh, it's only selling ladies wear. (kekeke)
Somehow, when Jung Min complains about Facebook not working, I'm a bit happy 'coz he's forced to go to Twitter (wheeee!).
Credits to SS501@Twitter + (English translation) ss501ode.blogspot.com