I use Skype as my primary development collaboration platform for a group of freelancers. I do not have a Facebook account, I am not a privacy nut, but Marks comments on users being stupid about trusting him with information and his documented abuse of that information shows a core character flaw that I would not trust my data with.<p>I know that Facebook has grown bigger than Mark and that he was young at the time but that is a very damaging statement. Especially his condescending tone in how it was delivered.<p>If Skype joins the Facebook family, I would switch to Google offerings for chat, video and voice and find a third party screen sharing tool for screen sharing. I just don't trust Facebook and that is a statement coming from a guy that is not too overly concerned with privacy.