You type in a subject you want to get news alerts on and you get an email once a day, or as it happens, with news articles about the subject found through google's search engine. Quite clever I think.
when ICQ was new, C|Net had this little news alert client that you ran and it would constantly update the news as it happened. it ran in a little window, or you could minimize it and have it do pop-ups about certain subjects.
this was my main source of entertainment besides 3D Space Cadet Pinball and Solitare when i used to do customer phone support.