Why do I say this? I got an e-mail today purportedly from someone I know making such a claim. I forwarded it to a friend of the person to say, "I think so-and-so's e-mail address book has been hacked." As I expected, the "traveler" isn't traveling anywhere and knows nothing about being stuck some place needing an urgent wire transfer.
I wonder how many people this particular scam will catch. It doesn't even sound terribly original to me, but maybe I'm just cynical. Heck, if my mother got an e-mail from me begging for emergency money because I was (say) stuck in London without my wallet, it's sufficiently plausible that she could be taken in. (No offense intended, Mom! I know you read this sometimes.)
Note to the person affected, or others nearby that person: I deliberately filed off the identifying information about the story before posting it here. No criticism of you is implied at all -- anyone could have it happen to him/her.