I just found out about a new (to me) method of allowing readers to subscribe to my blog by email through John's post E-Mail for Feedreading. It is called RMail. Apparently it is a popular method of using a feed. A whopping 44% of his subscribers use RMail!
RMail has over 25,000 users, 65,000 subscriptions and they are sending over 50,000 emails per day according to Randy Charles Morin, President and Founder of RMail. Randy found a need and filled it. You can read more about the daily in's and out's at R|Mail Blog.
I have only recently started looking more seriously into RSS feeds. I didn't think I had a need for one because I enjoy going to each blog and reading the posts. But, for me, the advantage of a feed is I can visit a blog when I see it updates. It truly saves much time.
I have added a RMail subscription widget in my sidebar in the 'My RSS Feed' section. Give it a try!