[Ansil849]

This seems like a vector for 1) malicious content (malware, spyware, cryptominers), 2) spam (referral links, MLM sites), 3) offensive content (shock sites, extreme pornography), 4) illegal content (child pornography, terrorist material).

[lifthrasiir]

It also has a popularity ranking, which at the moment has an usual shock site in 4th place...

[swirepe]

Russian roulette is a vector for bullets, but presumably everyone knows that before they play.

[soared]

5) harmless fun :)

[jjoonathan]

I spent a few minutes looking for a good rickroll remix and found one that's pretty sweet and looks underappreciated in the view count: https://www.youtube.com/watch?v=jECVGW-nbUg

[discreditable]

#3 is the top third trending site listed.