I don't register because I find the format of Mudcat too cumbersome for everyday use- once a thread gets beyond half a dozen postings, it gets difficult to tell who is saying what to whom. So I only drop in once in a while, and only browse the threads I have time and patience for. And for such small usage, I can't overcome my antipathy to registering with anyone, so if I have to register, I probably won't bother at all. Who'd miss me anyway?