Warning: this article contains personal opinions.
I often hear or read comments similar to this:
Person #1: "I won't put my genealogy information online because I am afraid someone might steal it."
Person #2: "Where did you obtain all that information?"
Person #1: "From freely available public records, including census records, birth and death records, newspapers, and such."
Here is another variation of the same thing:
"I sent my genealogy information to person X, and now it is published all over the Internet! How can I stop that?"
Many genealogists think the information they collect becomes private for some reason and that no one else has a right to view the info. They collect information about names, dates, and places throughout history and then seem to believe that they “own” the information, even though they obtained all that from publicly-available sources. I believe they are wrong, both for legal and for practical reasons.