In today's Observer Business column, John Naughton discusses what a ripoff it is for ebook vendors to "sell" you books with abusive, multi-thousand word "license agreements," pretending that because you bought your book over the network, it wasn't a sale, and so you don't get to own it.These "licenses" aren't about upholding copyright (if they were, you could replace thousands of words of lawyerese with four simple words: "Don't violate copyright law"). They're about overriding copyright -- whic