We are being spammed by an extremely intelligent and aggressive spambot.
The bot uses several techniques to spoof users but is trying a new technique today.
If your email address is username + yahoo.com or username + gmail.com then chances are bot will successfully spoof you and bypass censorship.
If you have a username email combination that uses the above formula, you should probably change the username or use a different email. You will be moderated at first, but once your first comment is approved, it will be back to normal for you.