There really aren't a lot of original Christian ideas...there are just lots of copies of popular things (i.e. "Got Milk?" shirts that are transformed to "Got Jesus?"). So I guess I shouldn't be surprised that there are Christian search engines, but alas there is (actually there's a search engine for all the popular religions out there, which is just weird).
You can read the whole story here. Or try the search out for yourself by visiting www.seekfind.org. I encourage you to type Porn, Sex, and watch those filtered results pour in!
Type in "Barack Obama" and the first result is "Is Barack Obama the Anti-Christ"! Type in "George Orwell" and you get "Christian Distractions" (but make sure you set it to match all words).