Whether it is worth or not, it depends on how you define worth.
I used to buy the hype cycle out of recommended books by "the internet" (reddit, HN, blogs, etc), for example: the tipping point, wisdom of the crowd, paradox of less, this book, get things done, etc.
But then I figured out that I want to (and should) do my own thing, not to follow someone else's lead.
I sold mine last month and am now trying to get rid the other books as well.
Keep in mind that while it is 6 years old, most of the content are "concepts" of various topics from startups, competition, hackers/recruiting, etc.
[EDIT: reading that book brought me here. Never regretted that]
[1]: https://twitter.com/#!/oreillymedia/status/21836062456283136
[1]: http://www.amazon.com/Hackers-Painters-Big-Ideas-Computer/dp...
I really enjoyed reading the parts that called on developers to challenge old players in new markets; inspiring stuff.
http://www.scribd.com/doc/47180/Paul-Graham-Hackers-And-Pain...
