As part of the ongoing update of the site, we are shifting to Disqus. The reason for this is that it offloads the comment database (which is huge) which makes it much easier for us to manage comments, and which should improve overall site speed. We have chosen an option that enables Single Sign On, meaning that you should be able to login with the same WordPress ID that you’ve been using at LGM. We’re also importing all of the existing comments from LGM.
The transition from WordPress to Disqus comments is currently scheduled for 8:30am (ET) on Wednesday; we’ll update if there are any problems or changes.