Japan's Vodafone K.K. announced today (PDF) new anti-spam measures to make its Vodafone live! mobile internet service more dependable for customers. As a measure to prevent nuisance mails, the number of SMS that can be sent to from a Vodafone K.K. 3G handset within one day will be limited to 500 starting 31 May 2005. Handsets that exceed this limit will not be able to send additional SMS for the following 20 days.