I recently added the Follow This Blog widget to my right side bar. According to Blogger, "The Followers widget is a great tool to help you grow your blog's audience. Readers often visit a blog and enjoy it but fail to return. With the followers widget you can get all readers to return and become a fan."
I thought some of my regular readers would use it for convenience....but I've been happily surprised by the number of new readers (or possibly, lurkers) who have used this feature. As an added bonus, it's been fun for me to have a look-see at these new blogs.
I recommend this widget!