DailyLit is the service that delivers books to you in bite-size pieces so you can easily read them on a portable device. They started out with mostly older public domain titles but have expanded the program to include quite a few newer books for less than $10 as well.
A recent development that caught my eye was the launch of an SAT Prep title they're offering from Kaplan. For only $4.95 a student gets 60 installments with lessons that focus on "vocabulary, usage and grammar, and cover important vocabulary words by giving concise definitions, helpful synonyms, and sample sentences that show words in context."
Given that quite a few kids studying for the SAT have a cellphone, it's a great way to encourage a bit of test prep work in the midst of texting their friends. And for $4.95, how can you go wrong?!
I bring this up because I think it's yet another excellent example of how content delivery methods are rapidly evolving. I'll bet quite a few students would prefer this model over a traditional test prep book, for example. They're growing up getting much of their content from online sources, including their cellphone, so it's wise for Kaplan to partner with DailyLit and meet their customers where they live.