> I think the only one that exists

Wechat moments show you the things that your contacts post. There are theoretically ads too, but ever since they forcibly converted me to a US-based account I don't get ads because no one is interested in advertising to me.

It's too bad; I liked seeing the Chinese ads.

Comments on wechat follow the Maplestory system where you can see comments (on anyone's posts) from your own contacts, but not from other people.