It's been written that one of the reasons for Snapchat's success is the fact that they did not implement likes regarding photos. Some reasonably theories that likes inhibit the frequency of content creation by inducing mental friction in trying to determine whether content is post worthy or whether it will generate likes.
This behavior is also evident in users deleting content when it does not receive the enough social acknowledgment like the infamous Instagram (11 likes threshold.)
How are comments on content different than likes? Can the ability to receive comments lead to users into the same mental friction?
Imagine a link sharing app where the only variable feedback is the ability to see who saw your links vs. an app where link sharer can also receive comments on the links posted. Can the ability to receive comments decrease the number of links shared because the sharing process involves the user determining whether the link they're about to post will generate the reward (the comments)?