Your company is invisible without an iPhone app — or is it?

Some industry observers are saying that not having an iPhone app today is like not having a Web site 10 years ago: Without an iPhone app, you don’t exist. Social media consultant Shel Holtz thinks that might be an overstatement. “I appreciate the enthusiasm and understand where it’s coming from,” he blogged at a shel of my former self . “And while your organization may well benefit from an iPhone app, it’s not a requirement. What is required is developing a strategy fo…