I have been using Google Alerts and I love it. Here's why:
Google Alerts is not brand new by any means, but it is something that I have just been getting more familiar with over the last few months. Google Alerts will track and notify users of topics in the news, hot community topics, online groups and other various web findings.
If you do a lot of article writing, blogging, press releases, market research (and everything else to stay on top of your industry) (or even looking for ideas for a fresh new topic) then Google Alerts is perfect for you. All you do is go to the URL http://www.google.com/alerts and fill out the form for what you are searching for, what type it is (news, web, groups etc) and how often you want to be updated via email.
Here's the best part: (in my opinion) You can keep an eye on what the competition is doing, and what their latest news is. You can also add your site, blog, articles etc. (or whatever) so you can find out what people are saying about you. It could be a really great way to get honest feedback about your site and what you are doing in the industry.