Moves Which Deserve More????

Sorry guys, I can't seem to remember moves by name (at least some of them), but what is Quick Flowing Strike? (BTW thanks Tora for the f,f+2 definition)

Anyway, I just remember Yoshi's 1+2+3 move, exactly what is this move for? Is it as good as 1+4? (I realized it might be kind of slower though)