Interesting Things
Got Example?
Don't forget to make use of the reserved (top- and second-level) domain names set aside by RFC 2606... especially if you find yourself writing something like:
result = @model.do_request('http://www.somebogusdomain.com') result.code.should == 1001 # NOTE: www.somebogusdomain.com actually exists!

It sounds interesting and I’m a little bit curious on how it will works. Might want to look into that.
To be precise: use @example.com/net/org for intentionally bogus email addresses; any email sent accidentally for real will linger in your mail queue and eventually bounce. But watch out using them for other purposes -- example.com actually has an A record and responds sucessfully to ping and HTTP. (Try it and see) You may end up generating network traffic when you don't want to.
For more details, you can read the RFC (RFC 2606: Reserved Top Level DNS Names) that explains the intent and correct use of example.com, net, and org.