I must confess I think this is a very nice idea, alas, as a former virus writer I'm known for having little ethical problems with these kinds of things and will gladly sign up, whereas other people might frown upon the tactics they use.
However...
Sceptical as I am I downloaded the "Do Not Intrude Registry" Compliance Tools, with which you can check wether you are using email addresses that have signed up for not receiving any spam mail anymore and created a small text file with the following addresses:
info@bluesecurity.comand processed it with their tool. I was quite amazed that none of these addresses were listed as protected by their own system. I think a company should stand behind their own product and use it, how else could you convince people to use it if you don't use it yourself? How about Mikko Hypponen if he would use, say, Norton Antivirus to protect his computer instead of using F-Secure?
postmaster@bluesecurity.com
webmaster@bluesecurity.com
sales@bluesecurity.com
root@bluesecurity.com
info-dep@bluesecurity.com
press@bluesecurity.com
marketing-dep@bluesecurity.com
careers-dep@bluesecurity.com
cleanup@bluesecurity.com
legal-dep@bluesecurity.com