I do NOT have a Facebook account. I never have had one, and I never will. But I was recently on a trip through Greece. Upon returning home, I created a "tripwow" with my pictures. I have done this before on two previous trips. All three times, I get comments on the thread on the TA forum where I posted it. And also, all three times, I get comments from random strangers in my "inbox" from people that I don't know. Their full name is listed, "Joe Smith" has left a comment about your tripwow. There is also a picture of the person, not your typical avatar that you would see on Trip Advisor forums. There is a button to reply to them. I am never able to reply as it requires that you log in to Facebook. Not a big deal, and it has never bothered me much.
But today, I got another comment in my "inbox", NOT the TA thread, and this woman made the comment that she hoped I would do a trip report about where we stayed. While I was in Greece, I did indeed do "live" trip reports, five of them, from Athens, and the four different islands we visited. But I can not reply to her at all and let her know how to find the reports.
How are these people accessing my tripwow, if not through trip advisor? And is there any way for me to reply to her without joining Facebook? The full name is always given, but it is no one I recognize. I don't recognize the person in the picture either.