688
Amazon is making it impossible to remove the DRM from Kindle Books
(goodereader.com)
This is a most excellent place for technology news and articles.
Log2(8.2billion) is about 33. That means if each word only had 1 synonym, you only need to change 33 words to uniquely identify who was responsible.
21 words need to change if each has 3 options. 17 words for 4 options.
Then we change an additional 100 words in the process, and their tell becomes a tale.