Thats actually a very good idea for getting news related content on your site. However, I dont know if you clicked on the link but the alerts I posted are not just news related alerts. In googles own words they can be used for.....
Some handy uses of Google Web Alerts include:
keeping current on a competitor or industry
monitoring references to your name or company
finding out when people link to your site
discovering new websites on a certain topic
This morning whenever I performed a search on google.co.uk I was seeing at the bottom of the results something along the lines of.....
NEW! Would to like to receive alerts for the search bla bla bla........
Or is it just that these have been around for some time and in which case I should be quite?