dotEPUB is a free service that allows you to convert the content of a webpage into an ePub format to read on your tablet, phone, or other ereader device. dotEPUB can be used as a browser bookmarklet in Firefox, Safari, Opera, and Chrome. In Chrome you can also use the dotEPUB Chrome extension. With the bookmarklet or browser extension installed just click it to activate, convert the webpage, and send it to your ereader device.
For bloggers, dotEPUB offers a widget that you can install to enable visitors to convert your blog posts to ePub format. I looked through the widget documentation and have to say that while the directions are clear, installing the widget might not be easy for those who get nervous opening up the source code of their blogs.
The video below offers an overview of installing and using the dotEPUB bookmarklet.
Applications for Education
dotEPUB could be a great tool for students to take content from your course blog or website and put it on their ereaders for easy access wherever they go. You could also use dotEPUB to create an ePub portfolio of your students' blogging efforts.