From a post written a year ago:
One of the ideas I have been thinking about is paid microcontent subscriptions delivered to the mobile — via SMS or mail. The key word is “paid” — will people pay, or will it have to be free forever? The mobile is different — see the success of Blackberry and push mail, and also mobile operator-promoted VAS services. The question is: is it possible to build a direct-to-consumer model for content subscriptions, a sort-of iTunes for microcontent.