This site is readable by those that are not members of the site. but people not logged in as members cannot post. How do I know this. I was visiting this site for months before I actually got my membership registration to go through something about sometimes the site does not accept memberships from non payment form emails such as yahoo and hot mail. anywy those you see in the who's on line listed as invisable member are those people who are registered as members but have their invisable icon in their profile turned on. members listed as invisable can post to the threads. Those listed as anonomous are a mixture of the general public visiting and reading but not posting and members that have not yet logged in with their user name and password.