I think a picture says thousands of words – how about this picture of Trackur in action as written about in Web Analytics World – Online Reputation Management Tool by Andy Beal

“… Google Alerts only monitors content available through one of Google’s search engines. Trackur monitors many more web channels than just Google. In addition, Trackur allows you to save items, sort them, share them via email, and subscribe to an RSS feed–Google Alerts offers none of these features. “