This site is Joey Guerra's personal site.
You can sign in with your Twitter account and this is an example of the data from your Twitter account that is stored on this site's server:
The data stored on this site can and might be deleted. Don't use it if you expect this data to be here in the future. It might not be.
Having said that, please feel free to use it as a way to test out the site. The code is on GitHub.