Celebrities can be pretty exclusive about the accounts they follow on social media, which is why some stars' unusual decisions about whom to follow (or not follow) are fascinating.
Seth Rogen follows Instagram accounts whose sophistication may clash with his cinematic persona.
Rogen follows dozens of galleries, museums and artists, including pop-culture artist Jeff Koons.
The Instagram feed of Kourtney Kardashian's ex, Scott Disick, may be more refined than Rogen's.
Design, décor, hospitality, luxury-car and architecture brands make up his 15 Instagram follows.
None of his 15 follows is directly affiliated with a Kardashian (Kourtney or otherwise).
Weeks after joining Twitter in 2010, Conan O'Brien tweeted he'd follow "someone at random."
That "someone" was Sarah Killen, a 19-year-old student who had three followers back then.
As of July, O'Brien's account still follows only Killen's, which now boasts 356,000 followers.
The satirical account @TheTweetOfGod follows just one transcendent figure: Justin Bieber.
Former Vice President Al Gore follows presidents Bill Clinton and Barack Obama on Twitter.
But Gore also follows a fellow "Veep," albeit a fictional one, in actress Julia Louis-Dreyfus.
Some stars take social-media exclusivity to a new level, opting not to follow a single soul.
As of July 2016, Emma Watson didn't follow anyone at all on Instagram.
Eminem, Rev. Run, Kathy Griffin, Zach Galifianakis and the Dalai Lama follow nobody on Twitter.
As of late July, those five celebrities' combined Twitter follower count approached 44 million.
Another member of the no-follow Twitter club is Jay Z, despite more than 3.2 million followers.
But while his wife Beyoncé takes that same approach on Instagram, Twitter is another story.
There, Beyoncé follows 10 people, including Mariah Carey, Usher and members of Destiny's Child.
But one name is notably absent from Beyoncé's short Twitter-follow list: Jay Z.