Well according to this article from gigaom.com. The average day looks something like this.

• 2.5 billion content items shared per day (status updates + wall posts + photos + videos + comments)
• 2.7 billion Likes per day
• 300 million photos uploaded per day
• 100+ petabytes of disk space in one of FB’s largest Hadoop (HDFS) clusters
• 105 terabytes of data scanned via Hive, Facebook’s Hadoop query language, every 30 minutes
• 70,000 queries executed on these databases per day
• 500+terabytes of new data ingested into the databases every day

I also love this quote from the VP of Infrastructure.

“If you aren’t taking advantage of big data, then you don’t have big data, you have just a pile of data,” said Jay Parikh, VP of infrastructure at Facebook on Wednesday. “Everything is interesting to us.”