Hi, I'm not registred to Facebook or other social network. But today I received a registration invite from Facebook by a people that I don't know, and the strange is.... there is anyone that have this GMAIL address! Some days ago the same with an invite from LinkedIn. That i never used or registered. I have opened this email address an year ago, and never used for nothing and no people know it. How is possibile? The username of the email is so strange and I have zero spam... this is the first time that I receive an email, and specifically... an invite from someone that implicate that some one,.... know this mail?! Someone received "randomly" some strange invite from unknown people to register to Facebook or Linked? Facebook and Linkedin use some strange tactics to find email address and "simulate" invite? Or there is some explain?