Is this the census of the current default values or the new ones? The show computers default should be NO.
My general standpoint on this is the following: privacy in this sense means revealing/sharing personal details. That is, options to receive email (the first three above) don't share any information  and thus could remain opt-out. The show computers option does reveal personal details, so it should be opt-in.
Does that make sense? Do interpret it correctly? Opinions? Bernd Machenschalk?
 I know that unsolicited mails like newsletters are often (have to be?) opt-in nowadays, but getting contacted by us or the team (option #3) isn't of that quality, I think, as those mails are in the interest of the user and can't be considered spam.