Cuill seems noteworthy in that two of the founders are ex-Googlers and all of them seem very smart. "Cuill is a stealth search engine startup which claims that it can index web pages significantly faster and cheaper than Google. Cuill has told potential investors that their indexing costs will be 1/10th of Google's, based on new search architectures and relevance methods."

I can't find anything that indicates whether there's any substance to their claims. Certainly very smart people can do interesting work whose significance they greatly embellish and overestimate (AI researchers in the 70s and 80s).