Does Facebook or Google infringe on our privacy rights by dating mining?

[David]

I'm doing a debate and the topic is " Do web services (Google, Facebook, etc.) infringe on or jeopardize individual privacy rights by data-mining and distributing personal information to third parties?" I have to take the side that these sites don't infringe on privacy information but I'm having trouble finding information. I need factual information to help support my side. Any thoughts? Thanks.
Since it's come to my attention that information isn't normally public, just good reasoning is appreciated.

[Kelsey]

There are websites to keep ur name off google and it is ur choice to join facebook or post anything online. If u want ur privacy stay off the web and ull have it

[472]

they only give public info so no.

[Heidi]

They only give information according to the terms that you AGREED to when you joined the site. Since you agreed, there is no infringement.