On some forums, lurkers just suck. They add no value, and there's no reason to allow them to remain a member. Is there any way to require new members to have x number of posts within y amount of time or else the account is automatically deleted?
I did something like this on the MyBB forum I was running to deal with lurkers. You could prune users with a 0 (zero) post count after so many days,weeks or what ever you set it as. Worked also with validating users, so there was never any need to manually prune users away who had not activated their account via email sent.
I had it set to 1 post, so if after two weeks a members still had less than 1 post, they had zero posts. They got pruned away (deleted).
just create a name for the group and the permissions according to what you want the user to do, don't forget to make sure the user has posting and viewing permissions or I would be willing to bet you they never get out of the 'lurkers' group
I would change the user title override to something that doesn't put the user on blast if that is not something you are trying to do, even a - would suffice for this...