Response to Google’s Lost Social Network:
Reader social was too interconnected with the Buzz API. Lashing it slowly into the +/API was the only choice once the plug was pulled on Buzz-that transition was horrible due to how underdeveloped the +/API was at the time. +/api had only people, comments, and activity when G+ opened. Sort by magic required the Buzz ‘like’ (+1), which was not available in the +/API.