Quite simply, I looked at the current state of search and saw a path through which I could add something useful to the space.
There are all sorts of issues with current search, most of which have been discussed on this forum elsewhere. Relevancy is certainly one of them, but there are others too, e.g. spam, clutter, discovery, and UI.
I did something similar with Yahoo! BOSS APIs but I used terminal-liked console as the UI. Sometimes, I really think that it will be more useful for hackers to use a Terminal-liked search engine - http://geeky.siong1987.com. It is a bit slow because the whole application is not well-architectured. I sacrificed too much speed power for the developer feature.
About your application, I think the name of the search engine is really awkward. And, the logo is really too colorful. It seems like a side-project more than a serious project. Anyway, it displayed the results that I expected.
There are all sorts of issues with current search, most of which have been discussed on this forum elsewhere. Relevancy is certainly one of them, but there are others too, e.g. spam, clutter, discovery, and UI.