This really caught my attention as I was just given a Riff Wireless so I could listen to stuff on the car radio while my wife listens to hers.
I sighed in relief when getting to this final paragraph:
However, University of Pennsylvania bioengineering professor Kenneth Foster told health and lifestyle writer Markham Heid that studies showing a connection between mobile devices and cancer “have no credibility,” and that public health organizations that have studied research and information on Bluetooth and other wireless technology have not found “any clear evidence for health hazards at exposure levels below international limits.”
More @ 250 Experts Warn of Risks from Wireless Headphones