That study on cellphone radiation that was previewed earlier this week is out now, and -- surprise, surprise -- turns out to be somewhat inconclsuive and open to debate. The study, conducted by researchers from Leeds, Nottingham and Manchester Universities and the London Institute of Cancer Research, found "no evidence that using a cell phone has an effect on the development of tumors," according to one of the researchers involved. The study is based on interviews about cellphone usage habits with close to a thousand cancer patients and about 1,700 healthy people. However, at least one advocacy group, the UK-based Powerwatch, found the survey's methodology questionable, pointing out that nearly half of the cancer patients included in the study died before they could be interviewed. And, for conspiracy theorists out there, it's worth noting that the study was funded by, among others, Orange, O2, T-Mobile, Vodafone, the Mobile Manufacturers Forum, and the GSM Association -- though, of course, funding was done under an agreement that, according to the study, "ensured independence for the researchers."