The booklet is a useful call to arms in the fight against jargon, clichés and plain bad use of the English language. The previous sentence probably falls foul of the recommendations in several places, already.
The author introduces the subject - i.e. clear, concise writing avoiding tired phrases, buzzwords and other expressions of the day - puts his striving into a historical context (in fact Orwell's Politics and the English Language
is quoted quite frequently and many of his examples have made it onto the list), explains the reason for this linguistic diligence or even pedantry and then finally proceeds to the list itself.
The list forms the second half of the book (the split is fairly even) and mostly just involves the word / phrase, which the author considers should be 'banned', with on occasion the context in which it may be acceptable and in rare cases some background.
As noted by another reviewer, if you are looking primarily to understand where the phrases come from, you may be a bit disappointed. On the other hand, if you enjoyed books like Eats, Shoots and Leaves
, Politics and the English Language
or Der Dativ ist dem Genitiv sein Tod.: Ein Wegweiser durch den Irrgarten der deutschen Sprache. Die Zwiebelfisch-Kolumnen / Spiegel-Online
(for those having the same feeling about the decline of German language use), the book is a useful tool to remind oneself of the mistakes one makes and could correct. The fact that it is occasionally also humorous is an added bonus.
A final note - much of the book's content can be found on the author's blog.