Google Alert is a service which let you subscribe to email notifications for any keyword on the web. On similar lines, using TweetBeep you can subscribe to any keyword on twitters public timeline.
This is useful if you are interested in knowing who is tweeting about you, your company, your domain or anything of your interest.
Creating account is very simple and once its done you can add unlimited alerts for any keywords or domains. Domain link alerts works even if they are shortened by a service like TinyUrl.
You can automatically ignore alerts from your own twitter account. Also replies to your twitter username (ex. @rahul286) can be ignored while subscribing to alerts of your own username.
One more thing… you can also monitor tweets of a particular twitter user for any keywords!
If you are on twitter you will enjoy this.
Related: Follow me on twitter