For a few years now, since I started to use real blogging software (such as NucleusCMS and then WordPress), anyone could register on this blog and become a member. Membership didn’t offer much though. The main feature members have that others don’t is that they can work with the archive of their comments on this site. For the rest of the visitors, what was posted, was posted, and there was no way to change it.
Together with a few legitimate users, hundreds of abusers (SPAM posters, bots, etc) registered. Sometimes their registrations were cleaned out by one of the plugins. At other times, I removed them manually. And then still a few of them stayed, masking as real human beings and not doing much damage.
As I mentioned recently, I have installed WP AJAX Edit Comments plugin, which allows comment posting folks to edit their own comments during a certain period of time (15 minutes). This works pretty well for typing mistakes, premature postings, and that sort of things, which appear to be 99% of all issues people have with their own comments.
Since there is no more need for user registration, I have closed it. I have also removed all user accounts from this site that don’t have at least one comment. If you think that you need an account, you can send me a message, including your email, username, and a reason for why you want it (I’m really curious). I’ll make you one.  If you have an account, but forgot your credentials, drop me a line, and we’ll reset it together. For the rest of you, just use the commenting form and you should be fine.