There are three different type of comments to consider here:
 1. The issue comments
 2. The pull request comments
 3. The pull request review comments

What I was supposed to implement was the pull request review comments. On my pull request it didn't return any result because there was no review comment. Since you just added one now there is one result (and there will be two after I post this one :smile:) .

I think this [page](http://developer.github.com/v3/pulls/) of the API documentation needs to be updated as this is where you're supposed to fetch the comments associated with a pull request. We would then need to update this [issue](https://github.com/octokit/octokit.net/issues/135) accordingly.

Does that make sense (I might be completely mistaken as I'm brand new to the Github API)?