Demos are a very poor way of assessing a design.
Of course, people who don't use the Internet themselves don't care about content, so I am sure that you will find many clients who just want to look nice because they have head that it is hot to be on the web without understanding why. In the long term, repeat business may only come from those clients who derive value from their websites. Of course, as Brian states in his message, the real solution is great design that satisfies both criteria. This is a fake email address. So many old members of this list were getting spam generated from siphons trolling the archives that I replaced all email addresses with randomly generated spam traps that forward mail to spam fighters.