Well, a couple years ago it was reported that YouTube alone receives 300 hours&#x27; worth of video uploads every minute. That&#x27;s without considering other social-media properties with file-upload capability, or PaaS offerings like AWS.<p>So I&#x27;d say it&#x27;s certain that the requisite number of MD5 hashes have been generated across the aggregate of those systems (assuming enough of them use MD5 in some fashion), and I&#x27;d personally bet money there&#x27;s at least one real-world deployment out there that&#x27;s handled enough all on its own to hit the birthday point.