From their FAQ: "We will particularly stand out with features that are not in the best interest of commercial search engines: showing less (if no) ads, having a

From their FAQ: "We will particularly stand out with features that are not in the best interest of commercial search engines: showing less (if no) ads, having an open API, and generally not trying to maximize the amount of time users spend on our service." Seems like right now they are focusing on getting contributors though.