Thanks, neven.
The biggest talking point, IIRC, was the in-the-Seventies-they-said-we-would-be-in-an-ice-age-by-now one. When I tried to refute this, they almost called me a liar (which annoys me because I try very hard to be truthful). They also made a point of old estimates of temperature, CO2, etc. being all over the place.
I guess I was wasting the electrons with my effort over there. But it was not primarily a denier forum, and I thought some might be more reasonable, if I made an explicit topic on it. No such luck.