Hi Max,

All of our automatic APIs aren't meant to be used on directories or listings pages (for that, we provide a crawler which gathers those links and then feeds them into our automatic APIs). The discussion API is intended to be used on discussion pages, for instance: http://www.diffbot.com/testdrive/?api=discussion&url=https%3...

If you wanted just a list of submissions and score, you could use our custom API toolkit(similar to Kimono): http://www.diffbot.com/products/custom/