No, this is not a real Sinatra error :).
This is the personal homepage of Elad Meidar, a web developer and an entrepreneur specializing in Ruby on Rails. I hang around in Israel, and i am currently having the best time of my life over at Fiverr.com
I am a proud member of RailsBridge, Helping new Rails developers get into our world and also contributed a few Patches to the Ruby on Rails core.
i just love those web2.0 small time project, where people make their own application for something they wanted, and it turns out to be a Tsunami of digg hits.
yougetsignal.com is a great website with some various network tools for checking connectivity, domains, hosts, and traces (even phones) all of that within a great UI design.
really nice, and in the owners words:
YouGetSignal.com is a collection of network tools that I started working on in late September of 2007. The name of the site, YouGetSignal, is a nerdy play on a line of broken English from the infamous “All your base are belong to us” cut scene.
You're seeing this error because I think it is funny.