Salesforce.com recently celebrated its 15th year in existence, and as the SaaS (software-as-a-service) vendor races toward US$5 billion in revenue its influence on the industry is being felt more than ever. At the same time, some signs indicate that Salesforce.com is having a few growing pains, as well as showing some trappings of the mega-vendors it once mocked with its "End of Software" marketing campaign.