I am just starting to use Disqus on my joomla site and very much like the "recent comments block" and will try to create it.

I have 3-4 completely different interests/categories on our site (winemaking, honey & beeswax candles)  and would like to keep the "recent comments" in 3 separate categories.  I have heard of categories mentioned, but how do it do that. Can I make 3 separated instances of a "recent comments block" to display for each category?