graeme_p - 5:47 pm on Feb 9, 2012 (gmt 0)
So they are getting lots of signups? Lots of people do not value their privacy.
It reminds me of an experiment someone did, asking people for permission to take samples for DNA in return for hamburgers (or something similar) and lots of people took them up on it. Actually they did not want the DNA, only test how much people values privacy.