Yes viewing does not mean you are a member or logged in. I never log in on my smart phone but I might read a few posts.
Also why do you guys do the bump to remove spam in the lesser used forums? It's actually a bit annoying. And it seems kinda rude when a dude asks a questions and 6 hours later the only reply they got was "bump to remove spam", at least say hi. Some are first time posters.
Just sayin, otherwise I think your doing a great job but I still think it's a cop out solution where they have dumped this on the users instead of dealing with it at the admin level.