5:15 -- The controversy over Verizon Wireless 's decision to block text messages from NARAL Pro-Choice America, an abortion rights group, to members over its network raises an interesting question about the ability of phone users to opt out of text messaging.

Verizon reversed the initial decision to block the group this afternoon, saying the decision was made based on "an incorrect interpretation of a dusty internal policy." NARAL will now be able to take advantage of a system that allows subscribers to use a simple five-digit code to sign up for text message alerts.

Which is pretty straightforward -- the system was opt-in anyway. But it got me to wondering: Where is the opt-out clause on unsolicited text ads that many of us already receive on our phones? I'm starting to believe that the mobile phone is the next frontier for spam, and maybe it's time get tougher over opt-out clauses for text messaging? On my plain ol' everyday RAZR it is not even possible to block the sender of text messages you don't want.

— Dan Jones, Site Editor, Unstrung