The New York Times' Brian Stelter has summarized the ongoing dispute between those who curate and those who are curated. There is nothing particularly new in his piece, but it is a strong overview (with many star appearances) on the degree to which sites can comfortably (ie, legally) scrape another's work.
The Associated Press and GateHouse Media have each served notice in recent months of their discomfort with the way in which their proprietary content was being used freely elsewhere. While sites cite the "fair use" provisions of U.S. copyright law --- essentially permitting one-time editorial use that gives the audience a good sense of the work created --- others are of the belief that the scraping goes too far in revealing the highlights. It's as if every movie site discussed the most important scene, they argue.
Stelter's piece helps understand the lay of the land.