New members do get a welcome email, and sometimes I send a PM inviting a post, but really, if people want to lurk, let them - when they feel the need to drop a line they can see we're a welcoming bunch.
Spot on, nick. This forum is serving it's purpose. Lots of free advice, good people, great stories and experiences. Most of all, it promotes the preservation of pinball in many different ways. If any new members want to participate or become lurkers - that's up to them. "Sunday Questionairre" is still there, and anyone is welcome to add their answers.
I've had the pleasure of meeting a lot of really good people from the forum that I might otherwise have not met.