The genre is sites that let you post little bits of content around a certain theme, and they are usually similarly formatted. People can like comments, or dislike them with different clever words. Some let you upload photos. But all of these sites do basically this.
Now, these types of sites have become so popular, that you just see really random ones popping up on the internet. But let’s say you don’t know how to make one of these sites, but have a really silly idea for a community that would like to post short joke stories. That’s what Popular Site Template is for.
This is the most recent site I made with Google App Engine. For those interested in seeing how it works, code is available at github.