Making a promotional site with Sinatra
Sunnydirtroad.com is a web site put up to get some feedback on an idea (promotional site). What is needed here is a one page site that collects emails. Moreover, you want a protected admin page where the email responses can be viewed as well as some analytics. This is a "simple" use case but has some gotchas if you are coming over from Rails-only experience.
The full tutorial is found here.