I've realised that when I took over the running of Anargo around a year ago I forgot to set the admin email account, which receives all of the user activation request, to forward to me. As such there are currently several thousand un-activated user accounts sitting on the system. From the looks of it the vast majority of them are spam bots, but if there are any real potential users who have been neglected I apologise. I have now set the admin email to forward to me so I will be aware of new user requests and am going through and removing all of the old un-activated accounts. If you are a real user who wants to register on the site however it will help me sort the wheat from the chaff if you can also send us a message through the contact form.