RSS aggregators

[Jimmer]

I would like to add an rss aggregator to my site. I would like it to work like the one on this site.
http://www.feedmeporno.com/
What software do they use. I set up feedonfeeds but it is a little differant.

[Jimmer]

After looking at feedonfeeds and zfeeder I decided to use zfeeder. I'm trying to adjust it to only show the most recent entry.