A client told me this story over the phone and I immediately asked them to donate it as a testimonial - but they made me promise to keep it anonymous, for obvious reasons.
I have been utilizing the Clear Site content management software for managing the content and design of my website for a small consulting practice. One day I was on the phone with a prospective client (who had not yet seen my website) and we were discussing what types of services I could offer. As we were talking I realized that a few of the services I was offering were not even listed on my website. I was just about to give her the URL when I realized that I could do a quick update of my service offerings while continuing our conversation.
I wanted the prospective client to see the services I promised on my site. I was more than capable of these services, I just hadn't thought to put them in the site. Having the Clear Site software enabled me to literally make the additions in full stride, in the middle of our phone call. What an advantage to have that tool!