Here is a screen shot of its use at my forum:
That sits above the forum listing on the index page (forumhome). I have renamed the title on the header to "Sample Topics." Also, I have chosen to display two topics, 400 characters each. Here is a screen shot of the settings in the AdminCP:
I would like something like this for xenForo, if anyone is interested. I think it better than merely displaying the titles of latest topics because you actually get to see some of the content of selected topics. I especially like this for first-time visitors to see.
On an unrelated note, this is my first time using the attachment feature as it is implemented in xenForo, and I love it.