I specifically *avoid* the "News Feed" *because* it weeds stuff out. Maybe I'm weird, but I actually want to know what my friends have to say - that's *why* I'm on facebook. I don't want anyone else blocking stuff, especially when it does such a crappy job as facebook does, blocking way too much, yet not blocking the crap like "games people are playing" and "trending" that *facebook* sticks in there that I couldn't care less about.
And speaking of "anyone", one of the defenses against snooping through people's postings is "it's a computer not a person", meaning "no one will know what we find". When you get to a certain level of ai however, there's not a practical difference as far as the privacy issues people care about are concerned...