I bought Favs for Mac a while ago on a whim but discovered I really like it. The recently released Favs for iPhone is good, too. As the name implies, Favs is an auto-syncing bucket for things you star, like, heart, circle, and favorite across a wide array of services, including Facebook, Twitter, Vimeo, YouTube, Instapaper, Delicious, Pinboard, Flickr, etc. Now the Mac version has been updated with iCloud sync, and I can only assume the iPhone version will get it soon, too.
