Excellent book. Probably one of the best [non-fiction] history books I have yet to read. It is meticulous in its citations, well-organised such that the history is put into context and becomes as gripping a story as any fiction book or movie.
The book covers an incredibly broad range of topics; it's not just about European pirates of the 1600 and 1700s. In this book, you'll find the history of pirates of Madagascar, the Americas, the Orient, and even a bit about land pirates. It doesn't just dictate to you what the history was, either; it speculates and draws conclusions from documented and cited sources. It always admits to what it doesn't know, so you get a very healthy mix of hard facts about pirates and the conclusions that may be drawn from evidence left to us by writers of the time.
Highly recommended.