Skillful blogging can boost your company's credibility and help it connect with customers

Here is a good summary from Harvard Management Communication letter on the value of corporate bllogging:

"What Lutz and other executives recognize is that a blog is an incredibly effective yet low-cost way to:

• Influence the public "conversation" about your company: Make it easy for journalists to find the latest, most accurate information about new products or ventures. In the case of a crisis, a blog allows you to shape the conversation about it.
• Enhance brand visibility and credibility: Appear higher in search engine rankings, establish expertise in industry or subject area, and personalize one's company by giving it a human voice.
• Achieve customer intimacy: Speak directly to consumers and have them come right back with suggestions or complaints—or kudos."

It's all about "conversation", if you have a business (small or large) stop thinking, or studying about blogging, just blog it and connect to your customers in an honest and open way.