I have added a "Series" section to the sidebar. This section will have links to pages that groups all the posts of a series in a single place. I found that this would be helpful, as I usually don't write all the posts of a series at the same time. I have also created an "All Posts" page that can be accessed from the sidebar in the Posts section. Finally, the Newsletter section has been renamed Email-Digest. This is name better reflect the feature. By signing up you get an email alert with a summary of the post whenever a new post is added to the blog. The emails are only used for this purpose and nothing else.