Normally Krebs is the man, but this is wrong.<p>1. The ability to discover is enabled by default, not to share. You actually have to manually add the networks and contact groups you would like to share with.<p>2. This changes nothing about the trust model of WPA2-PSK, which begins and ends with the users you give your password to.<p>If anything, Microsoft gave a safer alternative to what anyone could have already done anyway.