The Lt. Columbo Forum
An area where fans from all over can ask each other questions and voice their own ideas and opinions on anything Columbo.This Forum is fondly dedicated in memory of "cassavetes45" (Carleen Zink),
Columbo's greatest fan and a great friend to us all.
Hi kay.......that site is columbo.us.tt
The admin there is colsy or colin columbo...but we haven't heard from him in a little while...
There are about 4 or 5 brave souls who try our best to keep it going...right now we are going through a period of Death Valley Days....kind of lonely and desolate there...but we keep plugging away. 
yeah, we could do with some new members over there.
Heres a link
Colsys Forum
Theres not much columbo discussion mind 
We do have a general chat section though. I know a few people here don't like it when threads go off topic into general chit chat. Thats why I like both forums.
Columbo chat here, general chat there 
Welshdragon
So you had to show off, Welshie!!! I put the address in and then you have to put in a direct link!!!!
You are amazing!!!
But as you say it is a great place to go to also if you just want to talk about 'stuff'. This place will always be our home but if you want to add to your experience the other site is great too.