Seriously, every time I look at the bottom of each page (ie. iPhone board) there are a decent 1,500 people view it, but no more than 10% of them are actual members. More members = more activity and more $ for the owner (if he gets any from the ads or whatever). Non-members should be able to browse the boards, but I seriously don't think they should be allowed to view threads without registering. It promotes activity if they register, and takes two minutes.