Google Alerts is a notification service that will email you on any topic (based on keywords) that you want.
You can find out:
You can set up Alerts to email you immediately (your brand, your name), daily or weekly. The best thing about Google is that it is automatic, a quick review of your inbox will provide you with the vital information you need.
You will need a Google account - if you have installed Google Analytics, Adsense, Webmaster Tools you will already have a Google account. You sign in at the Google home page.
Login to your Google account or create a new one.
Select Alerts from the My Products section:
Complete the form and click Create Alert.
Use quotes to restrict the search so that you limit the search.
Comprehensive will search news, blogs, web and videos.
How often: Some things you will want to know right away, others it would be better for a summary once a week.
All done!
As a note, it is better to have many alerts with tighter search terms than a global search term. After a couple of weeks you may want to review your alerts to concentrate on better alert notifications by amended the search terms and frequency.