- Like other commenters said -- make "Buy Now" and "Learn more" more prominent on the homepage.
- I'd also feature the price right there -- "We deliver a pair of socks once a month for $11."
- Feature pricing on "About" and "Subscribe" pages.
- On Subscribe pages, where do I enter payment info? Why page doesn't have SSL? (I assume payment info is submitted on the next page, but it is not clear -- maybe change "Submit" to "Next: enter payment info")
- I'd change "Write/Contact Us" at the top to "Buy Now".
Add Upvote/Downvote buttons, so you can figure out which content a given user enjoys more.
Potentially integrate with the 'read later' type of tools.