Forget Benioff's Hype: Five Problems Will Thwart Salesforce.com's Rise in On-Demand CRM
I found this article particularly interesting, probably because I work in the CRM Software space. Basically, this article goes on to outline the shortcomings of SalesForce.com. While I don't like bad mouthing the competition, I think that the author of this article outlines some great points. Anyways, worth a read.