Google Alerts

Google alerts can be useful if u want to get emails about a certain subject.  What you do is you go to the Google alerts page, then you type in a subject.

If you want you can preview the results.

Then if you want you can create the alert, and whenever google finds something to do with the subject it will send you an email with the page.  This is something for Gmail accounts only.  Its really cool and it can be really useful.

Google Alerts!