Reading the posts doesn't require an account. Seems fair that other functionality (voting, reading list, custom blogs, etc.) would require an account.
Edit: I got an account. The "blogs" page is a mix of blogs you follow and default blogs. I guess that shouldn't really need an account to see the default blogs.
Edit: I got an account. The "blogs" page is a mix of blogs you follow and default blogs. I guess that shouldn't really need an account to see the default blogs.