No, not what books are you enjoying, but what specifically is this page, that you're reading right now.
On other sites such as forums etc, we may be involved in a "thread". What single word or short phrase would best describe the interactions we have on Stack Exchange.
For more context, I was posting a comment on another site's Meta, and wanted to say:
As mentioned elsewhere on this ...
- "thread" doesn't work, because we're not a forum
- "Q&A" just doesn't seem right