Because our service, Filer.io, currently supports Rails. However, Node.js support is coming really soon and Node projects will be welcome in the next contest.
Ah, makes sense. Django is my preference though I work with PHP (Zend Framework) professionally as nothing else (besides .NET) employs where I live :-(
"I certainly don’t mind a search engine using my previous search history to help me find better content."
I actually do. This, in fact, is a form of control over the information you get. Since I do not like that, I stick with DDG despite all the inconveniences.
Google should give people a way to opt out of the bubble.
[1] http://en.wikipedia.org/wiki/Monit