It's a nice thought that there are all these "lurkers" out there reading the bo**ox that we post, but I think you will find that the majority of them are infact search engines just having a nose around.
I'm usually one of them, primarily because if I'm only poping in for a quick look I don't want the system to mark all the posts as read when I leave (which I find it does if I log in and only read one or two posts).
Having said that, I'm usually fairly quiet even when I do log in.
Far too busy to read the post every day at the moment, which is what I normally do. If I miss a day or so there are too many to read and the times I could have offered a view or information the post is days old. Sorry.
I frequently forget to log out as well, so you guys might think I'm lurking but I aint!