Diggnation was a show where two guys, Kevin and Alex, talked about interesting news stories they found on a website called Digg. Digg was like a big bulletin board where people could post news articles they found interesting, and then other people could vote on them.
Kevin and Alex would look at the news stories that got the most votes and talk about them on their show. They would sometimes have guests on the show, play games, or drink beer while they talked. People really liked the show and would watch it on a website or download it to their computers to watch later.
But, eventually, Kevin and Alex decided to stop making the show because they wanted to do other things. People were sad to see it go, but they still remember it as a fun show that talked about interesting news stories.