Silly amounts of input, via TechCrunch:
Facebook revealed some big, big stats on big data to a few reporters at its HQ today, including that its system processes 2.5 billion pieces of content and 500+ terabytes of data each day. It’s pulling in 2.7 billion Like actions and 300 million photos per day, and it scans roughly 105 terabytes of data each half hour.
At that run rate, Facebook sees over 100 billion (with a B) photos uploaded in a year. That type of volume is touch to comprehend.