I downvoted you. Social media are a new category. It's not like writing to the newspapers, yet it's not like telling somebody in private.
And society will still have to figure out where to draw the line. Is searching your social media a search? I mean, I think by U.S. laws, searching a large hall which only purpose is to meet with other people, even large number and by invitation, still requires a warrant.
Posting to Facebook isn’t completely unlike writing to a newspaper. You send something to Facebook and it is syndicated to whomever. How and when it gets syndicated is down to Facebook, not you, and even if you delete it then you have no guarantee that it was actually deleted. You don’t really own that information anymore.
Same goes for Twitter and Instagram etc.
It’s a mistake to believe that the information you post won’t be made public in some way, whether to a government or another private company or individual. How can we declare that a social media capture, in that case, is a “search”? It isn’t really a “search” - it’s practically there for the taking.
And society will still have to figure out where to draw the line. Is searching your social media a search? I mean, I think by U.S. laws, searching a large hall which only purpose is to meet with other people, even large number and by invitation, still requires a warrant.