I've read it. I found it wonderful when I was young, and insufferable after I had gotten a bit better at critical thought.
Among other things, it has one of the stupidest last lines in the history of literature. ("And with his finger he traced in the air a single word, 'Ego.'" ROTFLMAO!!!)
It's a superficially useful book, but in the end one has to conclude that Rand's scenario -- which she has to work really, really hard to set up -- isn't at all believable. If she must showcase her philosophy in a fabricated society, it suggests that her beliefs are less a coherent philosophy, and more a just-so story. (That Rand's objectivism is a just-so story becomes painfully clear if ever you decide to show that her premises are truly objective.)
Ayn Rand once said something like ...
"If all philosophers were required to present their philosophy in the context of a novel, there would be far fewer philosophers and far better ones."