Perhaps the top site for sharing feeds is the aptly named FriendFeed (friendfeed.com). There are quite a few apps that offer access to one’s FriendFeed account, but after looking at a number of them, I settled on FreshFeed. The app’s home screen provides a chronological list of your friends’ feeds and posts. Other screens offer access to more specific groups or discussions. I found the iPhone app to be even more versatile and usable than the Web-based version.