The more you have to offer, the more chance you have of attracting a new client. Think about the sorts of questions people ask about your business. If there are questions that are asked frequently, post the answers on your site. This not only provides relevant content for your site, but also saves you valuable time in fielding these questions on the phone. There is a difference in the way you would handle these.
Products demand to be portrayed and described.
Presentation of your content is also important People may percieve overly-slick advertising as an indication of an inferior product. Stick to a business-like presentation. This will let visitors know that you are serious about your business, your clients and their needs.