Be sure to direct callers on hold to your web site. Use on hold messaging to do that. The caller may well go to your web site while on hold. When you return to the line you will probably be asked a question about something the caller saw on the web site or heard while s/he was on hold. Wouldn’t it be rewarding to have the caller tell you, “I’m glad I learned about your service while I was on hold. I was planning to call Brand X as soon as I was finished with this call to you.”