I relate the following because checking sources and privacy issues should never be ignored in our quest for information about our ancestors. I apologize, in advance, for it's length.
I was browsing one of the "well known" family tree sites today and I saw my father and mother in law's names. That surprised me, because I'm the only family member doing genealogy and I have never put my tree on the web for all the world to see!
His birth and death places are wrong, as is his birthdate. Her birthdate is wrong, and her death date and place are wrong. I know this because she is still alive.
Someone of the same name as my mother in law did die in Georgia in 1997, but the SSDI gave the issue state as Georgia, and my mother in law has never lived in Georgia!
As I clicked my way through the information, I found my name and my husband's name. This means someone that I shared family information with, privately, about 9 years ago, has put up my name without my permission.