TechCrunch gave a great over view on the state of online Feed Readers or Aggregators. I think I prefer the term “feed reader” to “aggregator” because it is more clear. A feed reader lets you “subscribe” to things on the web that you want to read. It allows you to monitor interesting things without wasting time visiting countless websites. Feed Readers come in different flavors, web-based, stand alone versions, and plug-ins for Outlook.
TechCrunch has reviewed nine these web-based readers before, but not in comparison to each other. The bottom line:
If you are looking purely for performance, Google Reader and FeedLounge are the fastest in our tests. Bloglines and Rojo are the best choice if you are looking for a feature rich application (and Rojo blows Bloglines away on “web 2.0″ type features). None, however, yet approach the speed and agility of the best desktop based readers like NetNewsWire and FeedDemon.
Check out the article for details.