I’d expect Lesswrong and EA Forum to be quite high. But it depends what metric you are thinking of. Forums have a lot of active content compared to the other sites that are not updated as often. Forums probably have lower Unique User numbers and higher Page Views compared to these other sites
You can start by looking at the Alexa engagement ranking—lower rank is (superlinearly) better:
nickbostrom.com: 367k
effectivealtruism.org: 187k
givewell.org: 140k
80000hours.org: 122k
slatestarcodex.com: 91k
lesswrong.com: 46k
etc.
Whoa, Lesswrong beats SSC? That surprises me.
I’d expect Lesswrong and EA Forum to be quite high.
But it depends what metric you are thinking of. Forums have a lot of active content compared to the other sites that are not updated as often. Forums probably have lower Unique User numbers and higher Page Views compared to these other sites