I'm not always sure what is appropriate and what isn't in GCC. I know we talk in the PDA and one thing leads to another so stopping and thinking oh that should be on the GCC wouldn't occur to me. I am not sure I am comfortable asking after and discussing someone's health on the GCC. We do discuss personal issues as problems with kids and that was something I thought was not wanted on GCC.
We have joked around and played with poetry and that was not wanted in the main stream part. So I would find it hard to respond in the GCC for fear of offending. In the PDA I know I am not offending if I say something silly and joke around. I feel more comfortable there.
To tell you the truth I never read the GCC. Because it isn't listed in the recent topics I forget it is there.
Again this is just my opinion!!