Premium rate SMS (PSMS) is the term that describes the charging of a premium to consumers, for a text message that is either sent or received by their mobile phone.
On Flytext website, Thomas Schuster answers a lot of questions concerning Premium Rate SMS. It's a very interesting contribute that helps understanding how to run a wireless campaign.

Recently the Flytext mobile campaign Movie Rewind has been featured in a case study presented on Revolution Magazine. Movie Rewind targeted an audience aged 16-35 with competitions linked to films such as Lethal Weapon, Dirty Harry, The Rock, City of Angels and Erin Brockovich.