The rise and fall of FriendFeed, that social network that brought you the 'Like' button – Corinne Litchfield, The Kernel
Launched in beta in 2007, founded by four ex-Googlers – Bret Taylor, Paul Buchheit, Jim Norris, and Sanjeev Singh – FriendFeed's mission was to glue together other social networks, consolidating activity from 23 social networks into a single feed.
In addition to pioneering the Like button, it also pioneered the realtime feed, the ability to share or embed items from the feed in the wider web, and more. It had a thriving community too.
Facebook bought FriendFeed, incorporated many of its ideas in the News Feed, and killed FriendFeed in 2015.
I liked FriendFeed a lot.