There's actually no such thing. Just that linuxcounteer gives a number of people who register with them as using linux. There' nothing official or such about it.
See *www.thinkdigit.com/forum/showthread.php?t=3544
Hi Guest we just wanted to alert you to a major change in the forum. We will no longer be allowing the posting of outgoing links. Please use the attachment feature to attach media to your posts.