Aggregation Ethics

We talked in class about ways to aggregate content from other sites without prompting criticisms of impropriety. Linking to original stories, and properly quoting and attributing material are all key. (See Jack Shafer's take on the Jim Romenesko/Poynter flap.) In the comments area below, please link to a blog that aggregates content, and say in a quick summary if you think it does it well or poorly. Please be diplomatic; the world can see your comments.