Edublogs answers those questions and more in their new guide on how to deal with student and class blogs at the end of the year.
In How to Deal With Student and Class Blogs at the End of the Year Edublogs provides directions for archiving blogs, hiding content, deleting blogs, and transferring ownership and administration of blogs. The guide also includes step-by-step directions for exporting the content of a blog and then turning it into a PDF through a service called Blog Booker.
I've used Blog Booker in the past to turn Blogger blogs into PDFs and ebooks. Watch this video to see how that process is done.