Looking for a lightweight web-based feed reader? AlmondRocks would seem to be right up your alley. It's a simple two-pane feed reader which is most aptly described with either of two adjectives: "simple" and "fast." AlmondRocks eschews BlogLines' frames and goes for an AJAXy interface which is a pleasure to use. If you want to give it a try it's got a cool "guest" mode where you can play with all the features and if you like it, create an account on the spot which will save all of your settings from your test-drive. My only two criticisms are that it shows posts in chronological rather than reverse-chronological order, and when viewing a feed for the first time (i.e. when there are a lot of unread entries), it can take awhile to load.