I used to play on KGS since it was a very nice server before the really weird and ridiculous changes in its TOS in Spring 2004; then I also effectively stopped playing. I do not understand why people complain so loudly about the policy of IGS while KGS's new policy is effectively the same, culturally completely unacceptable for me.
I tried to find an alternative server for a while, but I do not like the interface of IGS (better players on KGS, and the same social atmosphere nowadays), and I can't use any of the Korean servers (since I am a Linux user). And I really do not have time to frequent in the local go club.
My level was 6-7k during the best days (KGS ranking) but currently I am very rusty.
Some interesting people I met on KGS: sendol, ilanpi.