[mattrepl]

Closest thing to an answer I've found is from the licensing page: https://www.reddit.com/wiki/licensing

But it doesn't specifically address collection and distribution of API results as a dataset.

(From the page:)

A licensing agreement is required in order to:

* use the reddit API for commercial purposes. Use of the API is considered "commercial" if you are earning money from it, including via in-app advertising or in-app purchases. Open source use is generally considered non-commercial.

* use the reddit alien logo ("snoo") in your app or for its thumbnail. Any new apps you create must be approved as well before usage. The circular "r" logo is reserved solely for use by reddit, Inc.

* allow users to subscribe to reddit gold via in-app purchases. If your platform allows for it, we encourage you to work with us to make this happen. We see gold purchases as a way for you to help reddit and to give back to the reddit community.

[danellis]

> use the reddit alien logo ("snoo") in your app or for its thumbnail

Do any of the apps actually do this, though? (Especially the free ones.)

[anastasds]

UReddit does, but may not be a great example because I received permission to use the logo in a private conversantion with hueypriest years ago (as long as I didn't try to monetize the project).