Online aggregator service
In order to keep track of all of the web feeds you're interested in, you'll need either specialized software installed on your computer or access to an online service that can be used on any computer connected to the Internet. The specialized software or online service that is designed to subscribe to, manage, and display results from web feeds is known as an "aggregator." . . . Because of its dominance in many online services (web searching, e-mail, online news, etc.), it should come as no surprise that Google provides a popular and easy-to-use aggregator as one of its suite of free online services. Once you have created a free Google account, you can follow the "Reader" link to access Google Reader, or you can visit the URL www.google.com/reader.
(Excerpted from Social Networking for Genealogists, by Drew Smith) and from GPC Newsletter.