As an autograph collector I also enjoy browsing and learning from threads pertaining to non-autographed memorabilia. With two forums I'll be less likely to casually peruse the other stuff. But if that's what people want...
The occasional snide and condescending remarks about those [fill in the blank] autograph collectors do not go unnoticed. However, I've been on the Interweb long enough to know to not let people I don't know and who don't know me bother me.