what good are you.

[Alicelily]

Ross: Tag? You're going?(Comes over to Tag) Uh we didn't get the chance to talk. Uh,so, where did you say you're from again?

Tag: Colorado.

Ross: Ah, what good are you.(Walks back to his map dejectedly.)

=> What does "What good are you." mean? ^^;

[Johan[@CLT]]

Ross: Tag? You're going?(Comes over to Tag) Uh we didn't get the chance to talk. Uh,so, where did you say you're from again?
Tag: Colorado.
Ross: Ah, what good are you.(Walks back to his map dejectedly.)
=> What does "What good are you." mean? ^^;

I think it differs, you have to look at the context in which it is used.

1) It can/might be an insult here.

2) What business do you have here ? what's the purpose of your visit ?