Google Scholar Alerts
This is very cool:
Ever since we launched Google Scholar, people have asked us to help them keep up with current research. Over the years, we’ve made several improvements to help find recently published articles, including the “Recent articles” mode, a simple interface to limit search to recent years, and, of course, more frequent index updates. As the next step in this endeavor, we have recently added email alerts. Now you can create alerts for queries of your interest. When new articles that match your alert query are added to Google Scholar, we’ll send you an email update with links to these articles.