My friends in real life were complaining that they couldn't comment on my blog because they didn't have a blogger account.
Here's how to comment:
1. Go to post.
2. Write comment.
3. (OOOO here's the hard part) Next to "Comment as" there's a little drop down list. Click the arrow. You'll get a list of all the different things you can comment as. You can choose between google account (gmail), LiveJournal, WordPress, TypePad, AIM, Open ID, Name/URL, or Anonymous. It's that easy.