Here’s the official word:
For those of you who sign-in to comment on the MSDN Blogs, there is a change coming on January 27th 1:00 pm (PST) regarding user accounts and profiles. Please click here to read about this change.
If you have questions, please leave a comment on the linked blog post so that the MSDN Blogs platform team can reply to you directly.
Here’s the gist of it:
On January 27th, we will be merging the MSDN blogs user accounts with the MSDN Forums Profiles.
This is part of a profile centralization effort, which will consolidate our users’ profile suites down to a single instance which will be used across the MSDN websites.
That is all.