I've been programming WoW (World of Warcraft) stuff since my early teens and this site is the home for all (or at least most) of my projects. WoW keeps fueling my programming skills to this day. Datamining is a hobby of mine so the combination of these evolved into the tools on this site.
All requests are logged to monitor for (and prevent) abuse. Logged information includes IP address, the page you visited and with what browser you did so. The site also uses Google Analytics (with anonymized IPs).
If you create an account on the site, the following information is stored:
A salted hash of your password (generated with bcrypt)
E-mail (for account recovery)
If you submit filenames to be added to the database while logged in, your username is stored and will be mentioned on the frontpage as a way of saying thanks. If you don't want this, log out when submitting filenames.
The site and the tools powering the site are open source.