How to become a Registered Linux User?

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

*counter.li.org/
www.linux.org/user/register.html

you can even register your system stating what distro you use and so on..

li.org never works.
I am finally registered at linux.org.