Here's what I posted on this discussion
> Dec 17, 2014
>I got exactly the same message  posted to my cell phone.
>A few moments ago I responded-- now I'm hoping I did not just click on a virus.
>Arghhhh

When I responded to the cell phone message, I gave no further information but said (something like)"
I am me. Who are you?"

Then I hit send, and right away remembered I could look up the number as we each have done here.
BUT (New Development?) My phone did not send the message right off but wishes to know if I  (click one) wish to deliver by "gmail" or "email"  I've selected neither, but thought I'd point out that the anonymous caller receives a new piece of information by my response-- but, I think s/he's  messaging our cell phones from an online account-- perhaps even using an address list.  BTW Ido not list my phone number on FaceBook.