Wiki Alarm sends you an email alert if/when your selected Wikipedia pages are edited. You can track unlimted pages, monitor keywords like product and company names and send notifications to as many people as you want. Lovely idea, simple but effective.
Wikipedia pages are monitored every hour and email updates will be sent as soon as we detect a change. The email contains full information on the changes as well as the IP address of the person making the changes – you can see an example email here. When you register for wikiAlarm we will ask for a list of the pages you would like to monitor on Wikipedia as well as the email addresses you would like us to send the alerts to.