Hmm... I may be missing something. Can you clarify what's meant by targets/audiences vs segments? I understand a segment to be a subset of visitors, but not clear on what a "target" is in this case.

Okay, but there doesn't seem to be any way to look up an audience in "People" by ID, and the value in the URL doesn't match the value in the trace for the audience I do know. Is there a lookup function?