SU keeps to themselves,
STK only got out of control because of all the random fools who "joined" and disrespected the server, which eventually gave us a bad name... right now there are only 4 stk members and they are like SU, they keep to themselves...
i have seen other clans on reborn... but they really haven't said or done anything to leave a mark in reborn... some swing by and are like "YA WE ARE DA NEWEST CLAN OF R380RN!" and disappear a week later, so far the whole topic things sounds random, but what i know of about SU and STK is that they communicate by their own means, i know SU has a back channel, and STK used to have a private server