Hi Kninjanin, no I did not know about SocialNumber, and am glad to learn of it. However, your information about the sexting spammers prolly keeps me from giving it a try...FaceBook was actually too much for me, I closed my account there a few years ago now...
I think that even while the Internet is a wonderful miracle of our time, still it's a difficult place to navigate. Even one troll can really ruin a site, as we saw with BIurt!