While using Codeanywhere (https://codeanywhere.net/) and creating a new directory on the remote FTP server, the result was a folder filled with over 3,600 files that don't belong to me.
I've notified Codeanywhere, but even though I got a response "Will look into this right away.", there's been no follow-up.
...just in case you're a Codeanywhere user, here's the list of files: http://pastebin.com/GavSHqtv
(That being said, I liked Codeanywhere over Cloud9 and was about to subscribe. Should I still?)