I have been the last few days hanging out on my new KDF character. I know on the fed side there are some rp hubs that you can go to i.e. Deep Space Nine zone #1
A few of my fleet mates and I have been poking around on the KDF side and really enjoying ourselves, although we don't really RP on the fed side. We are realy into the warrior spirit i guess when on our KDF officers and would like to find more people that do RP.
KDF RP suffers from the small community, but it has enough potential to be viable. The species that are currently part of the Klingon Alliance certainly have cultures and mindsets interesting and diverse enough.
I'd also suggest joining the "STORP" channel and maybe even its website to get in touch with people, for communication is the key.