Hi, I'm preparing an internal presentation of ZooKeeper and looked again over the lists of projects using ZooKeeper[1]. However I believe that there may be many more projects (and companies!) using ZooKeeper. If you like to be listed, you can either enter your project on the wiki page yourself (you need to register for a wiki account) or just reply to this message and I'll post an entry for you.
[1] https://cwiki.apache.org/confluence/display/ZOOKEEPER/PoweredBy Best regards and thank you, Thomas Koch, http://www.koch.ro
