After installing some spam protection plugins on the PSEC site, I have re-enabled the self-registration feature. If you have not previously registered on the site, you can now do so by going to the Registration page.
The possibility exists that the new spam protection may effect your access to the site or your ability to login. If you find any problems, please let me know by adding a comment to this post or by sending me an email at email@example.com. I will be monitoring the site fairly closely over the next week or so to keep track of the effectiveness of the blocking software and will post any updates here.