[Wookie'sMom]

Anytime my dog barks I go and see what she's barking at and tell her "enough". You do have to teach an "enough" command (or "quiet" or whatever).
I'm sure someone with more experience (I'm rather newbie myself) will correct me if I'm wrong but here's the idea behind this:
The dog alerts the alpha (you) to possible danger, the alpha checks out the situation and the alpha decides whether there really is a problem or not, it isn't the dog's job to decide who or what is danger, just to alert.

Like LavenderRott I also bring her in the minute she starts to bark outside, just cause I don't want my neighbors bothered.