I'm a bit conflicted about asking this question, but it has been bothering me so why not ask?
I recently attended a genealogy workshop where the instructor said that he would NEVER use THE major online genealogy website (notice how I'm cleverly avoiding the actual name).
His rationale was "because they will willingly sell my data and my research" thus profiting from my work without my knowledge or consent. Moreover, they would be "invading" my privacy.
While I had never considered this to be an issue, or to be something I should be concerned about, I wondering if there is something that I'm not recognizing.