Ridley (a.k.a. Spectre Keaton) most recently showed up on December 30th according to the admin log at GSN.
Link1130/Ginkasa I haven't seen anywhere. He wanted to read my fanfics, so maybe he'll be back.
sdtPikachu I've seen posting in the computer forum. He hasn't been responding to my ICQ messages, though.
DDC probably has the same problem Ric does, whatever that is. Last I heard from Ric (many months ago), he was on vacation or something.
Gambit_X...well, you'd be surprised about him. I see him posting regularly at FunXbox.