mouse welfare

[Camille DelVecchio]

I thought the response from the animal welfare groups was a joke at first 
but it seems to be from a legitimate site.  How is it possible for a group 
to monitor email messages and post cautionary messages like this?  Does 
anybody else find this outrageous?   Can someone explain how it is done?  I 
realize they have some software that looks for certain keywords but how do 
they gain access to the "air waves" and what is to prevent a political 
group from doing the same thing?