Great to hear some praise for this new book. I haven't had a chance to read HA yet but find Ma's story very fascinating and have HA on my to-read list. If you are curious but not ready to make the leap and buy, check out some of his recent interviews. I found the TechCrunch one to be a good nutshell overview.

as an aside, the author of the linked New York Times article, Prerna Gupta, gained a lot of notoriety over her referenced social networking site with 2M members for spamming every members' entire email lists and using other questionable strategies. Perhaps the wrong person to spotlight as an entrepreneur. Nice story though if you don't know look beyond the article.