The problem of commenters having to register with wordpress or gravatar credentials has not been solved. That is, it was temporarily, but now the problem has returned. And my "Users must be registered and logged in to comment" box is UNchecked. Why does this problem keep cropping up? I had a giveaway last week and had a huge spike in views, but no comments (except one spam commenter). My blog is NewInEveryWay.wordpress.com.
The blog I need help with is newineveryway.wordpress.com.