Paid features are Live and event clip viewing over the internet, and receiving iOS notifications. You're paying for use of my server in those cases though, not for features I've made closed source. You can edit the code to use your own server if you wish too.
I'm new to HN and thought shilling the paid stuff violates the rules, so I didn't mention them.
(I'm a mod here) - it's fine to talk about paid features, as long as it's clear which ones are paid and which ones not.
The only thing that wouldn't be fine is to post a Show HN with no way to try the product out (https://news.ycombinator.com/showhn.html) and you're fine on that part.
"I'm new to HN and thought shilling the paid stuff violates the rules, so I didn't mention them."
HN ain't a non profit charity, but is the forum of a venture capitalist company, so talking about paid things does not violate any rules.
Paying for things does cause some folks to champ at the bit, though, so his assessment is not unwarranted.
It mostly gets people going on and on about how they could do it themselves for free.