Radium's clan entitled [ClaN] is open for new members, that's why.

And, to join [si], you have to beat BlurredD at least 10-1 in Semi. I know few nu who did not read [si] rules, and asked:
*this is taken from a play on a server yesterday*

DarkPlant RF : blur si tryout?
(silence)
DarkPlant RF : blur
DarkPlant RF : si tryout
Blur [si] : Read rule #7.
(some time passes)
DarkPlant RF : blur
DarkPlant RF : si tryout
DarkPlant RF : ?
Blur [si] : Read rule #7.

And so on...
(if you don't see purpose of this post, I posted it because R3p did not say about test.)