As much as you repeat it, that doesn't make it true. See this screenshot when I actually try to subscribe:
sheesh.jpg
Right from there, I can go and post an ad, something I should not be able to do if I am logged out. Now please, fix the issue.
Have sent you login info for this site for yet another issue, see:
http://www.photopost.com/forum/1249988-post19.html