Cuill, a start-up promising “a new approach to search”, has raised a big $25 million second round led by Madrone Capital Partners. It previously raised $8 million from Tugboat Ventures and Greylock Partners, for a total raise of $33 million. The Menlo Park, CA-based company, which pronounces its name “cool” (good luck on that), is still in stealth, but has been the subject of some buzz for awhile. A number of the company’s employees, including founders Anna Patterson and Russell Power, previously worked on search at Google (NSDQ: GOOG). A recent Wired piece on start-ups from ex-Googlers reported that the company’s angle was that it could index the web more economically than Google. Of course, a lot of companies have promised to beat Google in an area where getting people to switch their habits has proven tough. It’s not clear when the service will actually go live. Release.