They're very similar. The difference is that I like our interface better and we provide unlimited scrolling of the results. If people like the site and want to use it, I'm also planning on adding other search engines.

For the most part, it's been an experiment on my part to have a public site that people use. I've built quite a few sites, but this is the first with AJAX and some other technologies, so it's been a learning project for me as well.