For the most part I skip over the signatures when I read threads. It's become kind of automatic to just jump over the sig. I feel your pain when it comes to a mobile device, but I'm wondering if there's a way that I could just turn sigs off when I browse on my Blackberry? If not, that might be something worth having the admins look into.

Oh, and FWIW, I was once asked to reduce the size of my signature because it was annoyingly large. There are people that pay attention to it.