The MtgGatherer project is a little SMS text project, in response to a friend asking me whether the new M:tG set was up on Gatherer yet. It provides notification when a new set is added to the M:tG Gatherer site. By sending a text message to 41411 containing 'mtggatherer', anyone can subscribe to the feed. Once subscribed, you will receive a SMS text message as soon as a new set is added. This is done using a perl script (run via cron) to parse the site for updates, then call the textmarks service to provide text alerts.
Source code is available here